Hiển thị các bài đăng có nhãn diabetes. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn diabetes. Hiển thị tất cả bài đăng

Thứ Ba, 27 tháng 12, 2011

Another Cause For Children Obesity!

Childhood obesity is a serious issue as obese children are at a much higher risk of developing many chronic diseases including diabetes, heart disease, hypertension (high blood pressure), stroke and even certain types of cancer later in their life.

Sedentary lifestyle and unhealthy diet have been crowned as the main culprits responsible for childhood obesity. However, researchers from Temple University had recently found a new cause.

In a paper published in the ‘Journal of Pediatrics’, they reported that toddlers who still drank from bottles at age of 2 were 33 percent more likely than other children to be obese at the age of 5.

Of the 6,750 children studied, 1 in 5 was still using a bottle at the age of 24 months, either at night or all the time. For those who were long-term bottle users, roughly 1 in 5 was obese at the age of 5, comparing to about 1 in 6 that has been weaned earlier.

After looking into other factors that could affect a child's risk of obesity, including mother's weight, family income and education, and if the child had ever been breastfed, the researchers found that prolonged bottle-feeding by itself could induce a 33 percent increase in children's risk of obesity.

According to researchers, the bottle might be providing a source of comfort, rather than meeting nutritional needs. Nevertheless, the extra calories could be substantial. For instance, for an average 2-ear-old girl, an 8-ounce bottle of whole milk fed at bedtime would provide 12 percent of her calorie needs for the day.

Though the findings could not conclude long-term bottle-feeding is directly responsible for the increased risk of obesity, they did suggest that weaning babies around 12 month old could help prevent weight gain.

In fact, pediatricians already advise parents to wean their children when they are about 12 to 14 months old, or even earlier. This is mainly because extended bottle-feeding, especially overnight, is believed to boost the risk of cavities and might contribute to iron deficiency.

Thứ Sáu, 28 tháng 10, 2011

Another Way To Control Weight

Overweight and obesity are big headache for health experts around the world as these 2 conditions will likely raise a person’s risk of getting diabetes, high cholesterol, hypertension (high blood pressure), and eventually lead to heart disease or stroke. The medical cost involved can be a heavy burden for the governments.

In order to control body weight, one should watch the amount of food he or she eats. Numerous studies have looked at how the portion size can affect on the amount people eat. A new study, conducted by researchers from University of Utah, Salt Lake City, examined at how the bite size will influence the quantities ingested.

In their paper published in July 2011 in the ‘Journal of Consumer Research’, they argued that bigger bites lead to eating less, but only in restaurant settings.

The study was carried out in a popular Italian restaurant in the South-Western United States. 2 sizes of forks were used to manipulate bite sizes: a larger fork that held 20 percent more food than the fork usually used in the restaurant, and a smaller fork that held 20 percent less than the usual one. It was found that diners who used large forks ate less than those who used small forks.

Tables were furnished with either large fork or small fork over 2 lunches and 2 dinners in the restaurant. Servers, including one of the study's researchers, took customers' orders, and weighed the full plate of food that they had ordered before serving it to them.

Each plate was attached with a small sticky note written with details including weight and other information. At the end of the meal, every plate was brought back to the kitchen and weighed again. The results showed that diners who used the bigger fork ate less food than those who used the smaller fork.

Such theory, however, only worked in a restaurant setting. In another study conducted in the laboratory using also Italian food, researchers found that people who used big forks actually eat more. Hence, the study concluded that there are different motivations when people eat in a restaurant or a laboratory.

If you wish to control the amount you eat, perhaps you should ask for or simply bring along a big fork the next time you visit an Italian restaurant!

Thứ Năm, 22 tháng 9, 2011

Heart Disease Can Be Caused By Childhood Hardship!

While a number of risk factors including diabetes, hypertension (high blood pressure), overweight, smoking and high alcohol intake can lead to heart disease, childhood hardship can well be one of them.

Researchers from New Zealand's University of Otago revealed in the paper they published in August 2011 in ‘Archives of General Psychiatry’ that children who are abused, lose a parent or suffer other hardships might be at a higher risk of getting heart disease later in their life.

Among more than 18,000 adults in 10 countries, the researchers found that those who said they had faced childhood adversities such as abuse, death of a parent, or a parent’s alcohol or drug abuse had a higher chance of getting heart disease, arthritis, asthma, diabetes and other conditions. Similar pattern was seen among people who said they had suffered from depression, anxiety or other mental health conditions before the age of 21.

Though the findings did not prove that serious stresses in childhood would directly cause poor physical health later on, there were a few reasons behind the link between the two.

According to researchers, early adverse experiences could affect people’s behavior and lifestyle. Some people might just adopt smoking, drinking or over-eating as a way of dealing with the stresses. Likewise, young people with depression or other mental disorders might use smoking or drinking as a way to self-medicate. It is possible that severe childhood stress might have more direct biological effects.

Meanwhile, participants reported at least 3 childhood adversities had a higher risk of all 6 physical health problems that were assessed in the study. They had twice the risk of heart disease, compared with men and women with no adversities.

Similar results were seen among adults who said they had mental health conditions, especially depression, post-traumatic stress disorder or panic disorders, before the age of 21. Their risks of heart disease, asthma, arthritis and chronic back pain or headaches were between 43 percent and 66 percent higher than risks in adults with no early mental health disorders. Current psychological status, however, did not appear to account for the link.

Thứ Sáu, 2 tháng 9, 2011

What Is the Link Between Westernization and Heart Disease?

As a result of ‘Westernization’, the number of South Koreans with multiple risk factors for heart disease and diabetes has steadily increased. Westernization is the conversation to or adoption of western cultures including technology, politics, economics, lifestyle, diet, language and values.

A study published online on April 19, 2011 in the journal ‘Diabetes Care’ reported that one-third of Korean adults have risk factors associated with diabetes and heart disease. Since the late-1990s, Korea has become more westernized. Researchers from Gil Medical Center in Incheon intended to look at Korea's changing rate of metabolic syndrome, a collection of risk factors for Type-2 diabetes, heart disease and stroke.

Based on a periodic government health study on Korean adults aged 20 and above, the researchers found that 25 percent of Korean adults had metabolic syndrome in 1998. But by 2007, the figure had risen beyond 31 percent, which was closed to the rate of 34 percent seen in the United States at that time.

Such hike was seen amid a period of fast economic growth in Korea, together with the adoption of the less-than-healthy lifestyle often accompanying with it. Korean are eating more ‘Western’ food, watching more TV and having less exercise than a decade ago.

This is not the first study to link Westernization to health problems in Asian countries undergoing rapid economic growth. A recent study in urban Indian also found steadily increasing rate of obesity, high blood pressure and diabetes among young adults who were followed for 7 years. The researchers who conducted the study accused declining levels of physical activity and high smoking rate as the culprits for causing such health problems.

Meanwhile, several other recent studies in South and Southeastern Asia have also highlighted heart disease and diabetes as growing problems. A World Bank study on India and other South Asian countries had warned that people in the region get their first heart attack at the age of 53, which is 6 years earlier than people anywhere else.

To prevent from ending up with such health problems, people must change their lifestyle. For instance, they should perform regular exercise and adopt a healthy diet with low sodium (salt), carbohydrates and fat.

Thứ Tư, 24 tháng 8, 2011

What Are The Causes of Preeclampsia?

Preeclampsia is a medical condition in which a pregnant woman, who has previously had normal blood pressure, develops hypertension (high blood pressure) and has significantly high amount of protein in her urine. If this condition is not treated, it could lead to serious and even fatal complications for both the mother and the baby.

When one has preeclampsia, the only cure is delivery of baby. However, if this woman were diagnosed with the condition too early in the pregnancy, she and her doctor would face a dilemma. The baby needs more time to mature but the mother needs to have delivery to avoid serious complications to her and her baby.

Even if the mother and the baby survive, the mother could later have a higher risk of high blood pressure, heart disease, stroke and diabetes. Meanwhile, the baby is often born prematurely and can suffer complications later in life.

Researchers from Britain's Cambridge and Nottingham Universities announced that they have discovered a mechanism that raises blood pressure in preeclampsia and argued that their work might help the search for new drugs for hypertension. They also believed that they had deciphered the first step in the main process that controls blood pressure: release of a hormone known as angiotensin, from its source protein, angiotensinogen. Their findings were published in the journal ‘Nature’ in October 2010.

Drugs currently used to treat high blood pressure include ACE inhibitors that block the production of angiotensin or angiotensin receptor blockers (ARB), which prevents angiotensin from taking effect in the body once it is released. These drugs work well for standard hypertension but the pregnant women could not take these drugs because they are potentially dangerous to the developing baby.

The study, primarily focused on preeclampsia, also opened new leads for future research into the causes of hypertension in general. According to the World Health Organization (WHO), hypertension itself is the biggest risk factor for causes of death worldwide. Hypertension is also a risk factor for heart disease.

The cost of treating pregnant women with preeclampsia is estimated to be $45 billion a year in the United States, Europe, Asia, Australia and New Zealand. An estimated 75,000 women in developing countries die of it each year.

Thứ Năm, 28 tháng 7, 2011

Chocolate Might Help You Lower Your Cholesterol!

Who does not like chocolate? People, especially ladies, tend to eat more chocolate when they were in bad mood. But many reports had linked eating chocolate to weight gain that might lead to many medical disorders including diabetes, heart disease, high blood pressure, and stroke.

In a paper published on May 26, 2010 in the American Journal of Clinical Nutrition, researchers from the Chinese Academy of Medical Sciences and Peking Union Medical College in Beijing argued that eating chocolate could help reduce the cholesterol levels. Their theory, however, only applied to people already had risk factors for heart disease and who consumed in modest amounts.

After analyzing 8 trials involving 215 people, they found that eating cocoa would reduce levels of low-density lipoprotein (LDL) or bad cholesterol by about 6 mg/dL and cut the total cholesterol by the same amount. Further analysis showed that only people who ate small amounts of cocoa (an amount containing 260 milligrams of polyphenols or less) had their cholesterol levels lowered, and no effect was shown in people who ate more.

Polyphenols are antioxidant compounds found in fruits, vegetables, chocolate and red wine. A 1.25-ounce bar of milk chocolate contains about 300 milligrams of polyphenols.

While healthy people did not benefit from consuming cocoa, people with heart disease risk factors like diabetes had their LDL cholesterol and total cholesterol level reduced by around 8 mg/dL each.

However, researchers suggested more rigorous randomized trials with longer follow-up should be carried out in future research so as to resolve the uncertainty about the clinical effectiveness.

In fact, several studies suggesting that chocolate might be good for the health had been conducted before. A study on 19,300 people, which was released in March 2010, suggested that people who consumed the most chocolate had lower blood pressure and were less likely to suffer stroke or heart attach over the next 10 years.

Thứ Tư, 13 tháng 7, 2011

Is Video Game Really Bad For Children?

Video game, together with other screen-based entertainments like TV and DVD watching, as well as leisure time computer use, has long been accused as one of the culprits that cause children obesity.

Does this mean that children should be totally banned from playing video games? Researchers from Baylor College of Medicine might have a different perspective, as they believed video games could be used to encourage kids to eat healthier foods.

Their study, which was conducted in the United States, found that children who played certain video games increased the amount of fruit and vegetables they ate each day by around one serving. In the United States, nearly one in five 6- to 19-year-olds is obese. The findings were published on December 7, 2010 in the ‘American Journal of Preventive Medicine’.

The 2 video games used in the study were "Escape from Diab” and “Nanoswarm" designed by Archimage to change diet and physical activity behaviors to reduce the risk of becoming obese and diabetic. Archimage is a Houston-based visual arts studio using its experience in computer-based architecture to specialize in serious video game development for the medial research community.

“Escape from Diab” and “Nanoswarm” were designed as epic video game adventures that are comparable to commercial quality video games. A broad diversity of behavior change procedures was incorporated into the games, which can really motivate players to substantially improve diet behaviors.

Obese children are more likely to grow up to be obese adults, to suffer from many chronic diseases including diabetes, heart disease, hypertension (high blood pressure), stroke and fatty liver disease, and to die prematurely of any cause, as shown by numerous studies.

The finding is definitely a useful step towards fighting childhood obesity because increasing intake of fruit and vegetables could reduce the risk of obesity.

But, researchers also pointed out that while there was increased intake of health foods, children still failed to consume the minimum daily amount of fruit and vegetables recommended by doctors. What worrying them most is that children did not get enough physical exercise. According to health professionals, children should eat 5 servings a day of fruit or vegetables and get an hour of moderate to vigorous exercise.

Though serious video games hold promise, the researchers still felt that their effectiveness and mechanisms of change among youth need to be more thoroughly investigated.

Thứ Tư, 29 tháng 6, 2011

Eat Less Fructose To Prevent Hypertension!

Dessert is usually a sweet course of dish served at the end of a meal. It includes cake, cookie, gelatin, pastry, ice cream, pie, and candy. Dessert is not only liked by children but also favored by many adults especially females.

Besides dessert, many of our daily diet can also be laden with excessive sugar. For instance, sugary or soda drinks are popular among teenagers and many young adults. Most of these sweetened drinks contained the popular high-fructose corn syrup (sometimes called corn sugar). Fructose can be found naturally in fruit and table sugar and that is why it is also called fruit sugar.

Well, lovers of sugary drinks and sugar-laden foods should pay attention to results of a study conducted by scientists from the United States, who reported that consuming a lot of foods and drinks sweetened with fructose might significantly increase the risk of developing hypertension (high blood pressure).

The study was published on July 1, 2010 in the ‘Journal of the American Society of Nephrology’ by researchers from the University of Colorado Health Sciences Center in Denver. They found increased rates of borderline high blood pressure for people who consumed at least 74 grams of fructose a day (about 4 bottles of soda).

American Heart Association (AHA) also warned that having too much sugar of any kind can cause people gain weight and this could in turn lead to diabetes, heart disease and stroke.

While scientists have yet to find out the exact reason why fructose would raise blood pressure, some experts suspected that fructose has the potential to reduce production of nitric oxide within the blood vessels.

Nitric oxide, which is known to relax the vessel, is supposed to lower blood pressure. But fructose reduces the production of nitric oxide and makes it difficult for the vessels to relax and dilate.

Meanwhile, fructose also raises uric acid in the blood that could raise blood pressure. Fructose can signal the kidneys to 'hold onto' more salt, and that can contribute to high blood pressure.

Thứ Sáu, 17 tháng 6, 2011

Avoid Processed Meat To Prevent Heart Disease!

Bacon, sausage, hot dog and some other processed meat have already become an integrated part of many meat lovers’ diets. But many are probably not aware that eating too much of these would raise their chances of developing diabetes and heart disease.

In a paper published on May 17, 2010 in the journal ‘Circulation’, researchers from Harvard School of Public Health reported that eating unprocessed beef, pork or lamb did not seem to raise risks of heart attack and diabetes. Therefore, salt and chemical preservatives are the real culprits responsible for these 2 health disorders.

Many past studies examining the relationship between eating meat and cardiovascular disease and diabetes had found mixed results, and few had looked at the differences in risk between processed and unprocessed red meat.

To get evidence of a link between eating processed and unprocessed red meat and the risk of diabetes and heart disease, a systemic review of nearly 1,600 studies from around the world were carried out.

Processed meat was defined in the study as any meat preserved by smoking, curing or salting, or with the addition of chemical preservatives. Good examples of processed meat included bacon, salami, sausages, hot dogs or processed deli or luncheon meats. On the other hand, unprocessed red meat included beef, lamb or pork but not poultry.

The findings showed that on average, every 50 grams serving of processed meat a day (equivalent to 1 or 2 slices of deli meats or 1 hot dog) was associated with a 19 percent higher risk of developing diabetes and 42 percent higher risk of heart disease. Meanwhile, they found no higher risk of diabetes or heart disease in people eating only unprocessed red meats.

Hence, they urged people to eat less (1 serving or less per week) processed meats such as bacon, salami, sausages, hot dogs and processed deli meats in order to lower the risk of diabetes and heart attack.

As expected, the American Meat Institute objected to the findings quoting that it was only one study that was different from other studies and the United States Dietary Guidelines for Americans. Hence, there is no reason for dietary changes unless further studies could justify so.

Thứ Tư, 18 tháng 5, 2011

Higher Risk of Hip Fracture for Asian Diabetics!

A diabetic is one whose blood sugar is high either because the body does not produce enough insulin or because cells do not respond to the insulin that is produced. Diabetes can damage one’s eyes, kidneys and nerves. It can also lead to heart disease, stroke and even limb amputation.

In Asia, researchers from National University of Singapore (NUS) have also found that there is a link between diabetes and osteoporosis, which is the thinning of bone tissue and loss of bone density over time. The data obtained in the study showed that Asians with diabetes experience an increased risk of osteoporotic hip fracture, just like the diabetics in the West.

This is the first Asian study on the correlation between diabetes and osteoporosis, and its findings, which were published in May 2010 in ‘Diabetes Care’, a journal by the American Diabetes Association, were identical to the combined results of 11 previous studies done in the West.

Using the Singapore Chinese Health Study, a cohort study of more than 63,000 Chinese aged between 45 and 74 years, researchers examined the link between the 2 conditions. Established between 1993 and 1998, the study followed the participants for 12 years. Interviews were used to get the diabetes status and the number of hip fractures was identified through a nationwide hospital discharge database.

There was significantly more women had hip fractures: out of about 1,200 cases of hip fracture, there were 871 women, compared to 342 men. Meanwhile, the risk of hip fracture among people with diabetes was found to be twice that among those without diabetes.

While the participants were all Chinese, the researchers confirmed that the link so found could also exist across different populations with varying lifestyle or genetic make-up. In other words, the results in the study will apply to Malays and Indians too.

It is hoped that the findings could alarm the public so that doctors who manage diabetes and diabetic patients themselves will test for osteoporosis early to cut down the risk of hip fracture.

Thứ Sáu, 1 tháng 4, 2011

Is There A Link Between Migraine and Stroke?

Migraine is a fairly common type of headache, which might occur with symptoms like nausea, vomiting or sensitivity to light. For many victims of migraine, a shocking pain is felt only on one side of their heads.

There is no cure for migraine but medications could help reduce the frequency and severity of migraine. With the appropriate drugs together with self-help remedies and lifestyle changes, migraine can greatly be relieved.

Nevertheless, people with migraine should be more careful because they will face additional medical disorders, based on the findings published in 2010 in the ‘American Journal of Medicine’.

After analyzing the results of 21 International studies previously conducted between 1975 and 2007 involving more than 622,000 adults with and without migraine, researchers from Johns Hopkins University School of Medicine in Baltimore found that people with migraine are about twice as likely as people without migraine to develop ischemic stroke (a common stroke that is caused by blood clot in the brain). Most of the studies also took into account factors that might link migraine to stroke risk. These factors include age, high blood pressure, diabetes, smoking habits and weight.

It is unclear whether the migraine itself would directly lead to stroke for some people, but one thing is sure: pain does involve constriction, and then swelling, of brain blood vessels. So researchers suspect that people with migraine might have dysfunction in the blood vessels throughout the body that might explain the higher risk of stroke and heart attack.

While researchers believe that a common process is likely to contribute to both migraine and stroke risk, they are not sure whether treating and preventing migraine could reduce the people’s risk of cardiovascular events (include heart disease and stroke). As such, suffers of migraine are warned to pay great attention in controlling any modifiable risk factors, such as high blood pressure, smoking and diabetes, for stroke.

Meanwhile, researchers also clarified that while migraine are associated with a higher risk of stroke, the absolute risk remains fairly low to any one person.

Thứ Ba, 22 tháng 3, 2011

Vitamin-B Therapy Benefit Diabetics?

Studies have shown that high doses of Vitamin-B do aid heart disease prevention. Meanwhile, many researchers also believed Vitamin-B therapy using folic acid, Vitamin B6, and Vitamin B12 could reduce diabetic kidney damage because Vitamin-B can help lower blood levels of homocysteine.

Homocysteine is an amino acid that induces clotting in the blood and damages the lining of arteries. It is also a strong risk factor for stroke and heart attack. Diabetics are known to have higher homocysteine levels, on average, than people without diabetes.

But, the findings of researchers from the University of Western Ontario and the Robarts Research Institute in London, Ontario seem to be quite different.

In their paper published in the April 28 edition of the Journal of the American Medical Association (JAMA), they reported that patients with diabetic nephropathy might suffer rapid deterioration of their kidneys, if they were treated by high doses of Vitamin-B. They also pointed out that diabetics in addition to kidney function loss were affected by higher rates of heart attack and stroke than those who took a placebo.

Diabetic nephropathy is kidney disease or damage that is caused by a complication of diabetes. It affects the network of tiny blood vessels in the glomerulus, a structure in the kidney made of capillary blood vessels to filter blood.

To see whether Vitamin-B therapy would slow down the progression of diabetic nephropathy and prevent vascular events, the researchers conducted a clinical research in 238 patients with Type-1 and Type-2 diabetes. The placebo-controlled trial was conducted at 5 university medical centers in Canada between May 2001 and July 2007.

Patients were divided into 2 groups: one group received single tablet of Vitamin-B with folic acid (2.5 mg/d), Vitamin B6 (25 mg/d) and Vitamin B12 (1 mg/d) while the other group were prescribed with matching placebo.

After following the patients for an average period of 31.9 months, researchers found that those with Vitamin-B therapy had a faster reduction rate of kidney function, as compared with those who were on placebo treatment. In addition, those patients with diabetic nephropathy additionally had a higher rate of heart attack and stroke than patients who received placebo.

Thứ Ba, 8 tháng 3, 2011

How Fast Can Stroke Cause Brain Damage?

A stroke, sometimes also known as brain attack, occurs when there is an interruption of blood supply to any part of the brain because of blockage or burst in one of the blood vessels in the brain. If the brain cannot get blood and oxygen, the brain cells could die and permanent damage would be caused within a relatively short period.

Stroke is one of the top killer s in the developed countries. In Canada, stroke ranks the fourth leading cause of death, affecting as many as 50,000 people and killing 16,000 every year. Risk factors for stroke include alcoholism, diabetes, high cholesterol, overweight or obesity, physical inactivity, smoking and stress.

So how fast can stroke damage the brain?

Common public perception believes that all strokes can be medically treated within 3 hours, but scientists from the University of British Columbia in this Western Canadian city reported otherwise. Their study, which was funded by the Heart and Stroke Foundation of Canada, found that stroke could cause brain damage within 3 minutes.

Generally, stroke can be categorized into 2 types: ischemic and hemorrhagic. Ischemic strokes are those caused by interruption of the blood supply, while hemorrhagic strokes are those that result from rupture of a blood vessel or an abnormal vascular structure.

About 80 percent of stroke patients suffer ischemic stroke, which can usually be treated by clot-busting medications, provided if they could be admitted to the hospital within 3 hours. In reality, not every stroke patient is a candidate for clot-busting drugs.

Based on the results obtained from animal experiments performed, the scientists declared that brain could be damaged within 3 minutes. Such 3-minute window does not give people sufficient time to even call for help.

Preventive measures, therefore, are urgently required to tackle structural changes that happen very early on. People just need to manage risk factors and change their lifestyle to prevent getting a stroke, instead of relying on treatment when stroke strikes them.

Thứ Ba, 8 tháng 2, 2011

Playing Video Game Could Help Stroke Patients’ Recovery!

A person is said to have stroke when blood supply to part of his or her brain is disrupted causing the brain cells to die. Advanced age, hypertension (high blood pressure), previous stroke, diabetes, high cholesterol, and smoking are some of the risk factors for stroke.

Stroke is a serious medical condition as it could cause permanent neurological damage, complications, and even death. Survived stroke patients might not be able to move one or more limbs on one side of the body, understand or formulate speech, or see one side of the visual field. Treatment often involves health professionals like speech and language, physical and occupational therapy.

Canadian researchers from Stroke Outcomes Research Unit at St Michael's Hospital in Toronto, Canada reported on February 25, 2010 at a conference of the American Stroke Association that playing on a virtual reality gaming system like Wii might help stroke patients improve their motor function. Wii is nothing but a home video game console released by Nintendo on November 19, 2006.

In the first randomized clinical study, 20 stroke patients, who had suffered stroke around 2 months ago, were randomly assigned either to play 2 Wii games (Wii Tennis and Wii Cooking Mama) or to play cards or a game called Jenga. Wii Cooking Mama requires players stimulate cutting a potato, peeling an onion, slicing meat and shredding cheese, while Jenga involves stacking and balancing wooden blocks.

Both groups played 8 hour-long sessions of Wii or cards and blocks, over a period of 2 weeks. Not a single patient in the Wii group suffered any adverse effects in the study but 1 person in the card or block-stacking group had nausea or dizziness during the study.

The study focused on getting the patients to move their impaired arms to help small- and large-muscle motor function. Researchers concluded that the group using Wii showed significant motor improvement in speed and extend of recovery.

Thứ Sáu, 17 tháng 12, 2010

Why You Should Eat Less Meat?

Most people, especially ladies, do not like to be overweight or obese. The reason is simple.

The extra pound gained would in some way make the person’s appearance look not so nice, at least this is the thought that most people have. But more importantly, the extra pounds gained could possibly lead this person to many medical disorders including hypertension (high blood pressure), diabetes, stroke, heart disease and even certain type of cancer.

There could be many reasons why people gain weight, but improper diet and sedentary lifestyle are considered to be the 2 most important one that have been confirmed by many studies. Results of a recent European study can be another confirmation that stressed the importance of proper diet.

Researchers from Imperial College London reported in the American Journal of Clinical Nutrition that meat lovers gained more weight over 5 years than those who ate less meat but with the same amount of calories.

More than 100,000 men and 270,000 women from 10 European countries were involved in a study that examined cancer and nutrition and other lifestyle factors. Over a period of 5 years, both men and women on average gained about a pound a year, with women gained a little less.

The interesting part is that the more meat a person ate, the more weight this person gained. For every additional 250 grams of meat (equivalent to a half-pound, 450-calorie steak) a person ate daily, this person would gain 4.4 pounds over a period of 5 years. Among different types of meats, researchers found the strongest association with weight gain was poultry, followed by processed meats and red meat.

Therefore, researchers urged people to eat less meat so as to improve weight management. By cutting the consumption of meat by 250 grams a day could reduce a person’s weight by 4 pounds. While this figure is not very large for a particular individual, it could have a profound effect on the population as a whole.

Thứ Sáu, 5 tháng 11, 2010

What Else Can Cause Obesity?

While many studies have blamed the increasingly sedentary lifestyle and the availability of low-cost high-calorie foods to be the culprit for obesity epidemic in the developed countries, there might be other reasons behind this.

Researchers from Emory University School of Medicine and the University of Colorado at Boulder found that the bugs that help digest food could also cause the body to gain weight if they are not properly regulated. If wrong kinds of bacteria were dominant, they could cause a low-level inflammation leading to a pre-diabetic condition and an elevated appetite, as explained in a paper published on March 4, 2010 in the Journal “Science”.

In the study, researchers examined mice that were genetically engineered to be deficient in a key immune system protein, namely TLR5, which helps cells sense the presence of bacteria. Such protein plays an important role in the intestinal community, meaning it knows not to apply too much force and does not harm the good bacteria.

In the absence of TLR5, the immune system can still regulate bacteria but it just could not do it properly. When the bacterial composition changes, a low level inflammation sets in and insulin receptors are desensitized.

To justify the theory, a series of experiments were preformed on mice. The results showed that if the TLR5-deficient mice were given unrestricted diets, they ate 10 percent more and gained 20 percent more weight than the normal mice. Even if their food was limited, the TLR5-deficient mice were still less sensitive to insulin than the normal mice.

The TLR5-deficient mice also developed metabolic syndrome, which could cause weight gain, high blood pressure and high cholesterol levels, and it could raise the risk for developing diabetes and heart disease.

While the study was limited to mice, experts still believe they might applicable to humans as well. The findings suggested that excess caloric consumption is not only the result of undisciplined eating style but also changes in appetite and metabolism caused by the intestinal bacteria.

Thứ Ba, 7 tháng 9, 2010

How Is Intelligence Associated With Heart Disease?

Heart disease is the leading killer of men and women not only in the United States but also in Europe and most industrialized countries. The data collected by the World Health Organization showed that cardiovascular disease (includes heart disease and stroke) and diabetes accounted for 32 percent of all death around the world in 2005.

Diabetes together with high blood pressure, obesity, smoking, lack of physical activity are some of the known risk factors for heart disease. Interestingly, researchers from Britain's Medical Research Council (MRC) and Social and Public Health Science Unit in Glasgow, Scotland, recently declared intelligence as a predictor of heart disease.

Published in the February 2010 issue of the European Journal of Cardiovascular Prevention and Rehabilitation, the findings of a study derived from the West of Scotland Twenty-07 Study indicated that lower intelligence quotient (IQ) scores were associated with higher likelihood of getting heart disease and death, and IQ scores were ranked second among other indicators of heart disease after smoking. The top 5 heart disease risk factors identified in the study were cigarette smoking, IQ, low income, high blood pressure and low physical activity.

The study analyzed data collected in 1987 of 1,145 men and women who aged around 55 and were followed up for 20 years. The data collected including height, weight, blood pressure, smoking habits, physical activity, education and occupation, cognitive ability (IQ). The IQ scores were assessed using a standard test of general intelligence.

From the point of view of researchers, there are a number of possible reasons that could explain why lower IQ scores could raise the risk of cardiovascular disease. For instance, a person's approach to healthy behavior (like smoking or exercise) and its correlates (includes obesity, blood pressure) do have something to do with his or her intelligence.

Based on the results of the study, the researchers suggested that health promotion campaigns should be planned with consideration of individual cognition ability (IQ).

Thứ Tư, 11 tháng 8, 2010

Why Are Urban Migrants Likely To Be Obese and Diabetics?

Diabetes is closely linked to obesity, which is a result of increased consumption of saturated fats and sugar coupled with reduced physical activities. Both diabetes and obesity, if not treated and managed appropriately, can lead to development of many other complications including heart disease, hypertension, high cholesterol and stroke.

India, with the second largest population in the world, is experiencing diabetes epidemic, just like the rest of the world. Between 1984 and 2004, the number of diabetics has increased in the urban areas of India from 5 percent to 15 percent.

Being an essential part of the economic development, urbanization will naturally attract more people to migrate from rural areas to cities. Such movement would induce changes in diet and behavior for those migrants.

According to the findings of a large study published during April 2010 in “PLoS Medicine”, migrants moving from villages to cities to work are at a higher risk of becoming obese and developing diabetes, compared to their siblings who remain in the villages.

Researchers from the South Asia Network for Chronic Disease in New Delhi, India found that half of the migrants had gained about 14 pounds (6 to 7 kilos) of weight by the tenth year of their relocation. The increase was dramatic and some migrants even gained much more than that.

The study surveyed migrant workers from 4 factories in the north, central and south India, their siblings who were left behind in villages and the non-migrant urban workers. All participants had to answer questions regarding their diet and physical activity, and their blood sugar and body mass index (BMI) were also measured.

The results showed that migrants and the urban workers were 3 to 4 times more likely to be obese and more than 2 times more likely to be diabetics than people remained in the villages. Meanwhile, the migrants and urban workers were almost twice more likely to develop hypertension (high blood pressure) and have higher blood sugar than the villagers. Similar patterns of obesity and diabetes could also be found in women.

Evidence gathered from the study indicated the migrants, who had more money to spend on food, tend to eat more of everything (especially fat) than people in rural areas with other nutrients remained similar. The culprit behind the weight gain was not the Western foods but the ordinary everyday Indian foods.

Thứ Tư, 4 tháng 8, 2010

Why Small Country Can Have Big Health Problems?

Qatar, with a population of merely 1.6 million, is definitely a small country. But on the other hand, it is a very wealthy country. Its capita gross domestic product ranks second in the world and it has the third-largest proven reserves of natural gas.

The privileged and luxury lifestyle supported by the wealth also creates serious health problems related to obesity, diabetes and genetic disorder for Qatar, together with its neighbors like Kuwait, Bahrain, the United Arab Emirates and Saudi Arabia.

Despite of being small, Qatar is among the greatest prevalence of obesity, diabetes and genetic disorders in the world. Figures provided by the International Association for the Study of Obesity indicated that Qatar has the sixth largest number of obese in the world and has a highest rate of obesity among boy in the Middle East and North African region. Qatar also has the fifth largest number of diabetics for the age ranges 20 to 79, according to the International Diabetes Federation.

As predicted the Qatari health experts, 73 percent of Qatari women and 69 percent of the men would qualify as obese within the next 5 years (from 2010). Obesity can lead to development of diabetes, and many other medical ailments including heart disease, hypertension (high blood pressure) and stroke.

Despite all the challenges faced, Qatar has directed their attention to the treatment of diseases instead of focusing on prevention. Such peculiar course of action could only be explained by the Qatari lifestyle and tradition.

For instance, if one has taken lunch and then visit a friend. Very often, the friend will still bring many foods to the table. If one does not eat, the friend would consider it as an insult. In other word, people cannot get together without eating together.

It is understood that a typical Qatari student would skip breakfast, and then eat a snack and lunch at school. When the student returns home, they would be given another lunch, usually heavy meal consisting of rice and lamb. Later in the afternoon, the student will have snack on cake and tea. In the night, they eat dinner, often fast food that is delivered. Attitude can be the other challenge. For the majority of Qatari, there is nothing wrong to be obese.

As regards birth defects (genetic disorder), health experts blame it to consanguineous marriages (marrying within families), a social tradition that the Qatari is determined to hold.

Thứ Tư, 28 tháng 7, 2010

Is There A Need To Ban Free Toys With Kid Meals?

Fighting obesity epidemic, especially children obesity, has been one of a top priority tasks for many countries. This is because obese or overweight children can develop many medical disorders including diabetes, heart disease, high blood pressure and stroke later on when they grow up. The potential medical expenses to be spent on these people for treatments would be huge.

For years, “Happy Meals” from McDonald as well as meals bundled with free toys and goodies from other fast food restaurants have been the favorite meal options for children. There is no question that such marketing approach does help the fast food companies build demand for their products.

Health experts have repeatedly pointed their fingers to the unhealthy fast foods as the culprits that are partly responsible for causing the childhood obesity epidemic. Some even blame the toys and freebies that come with the meals as a powerful lure for children, encouraging them to consume unhealthy food.

The social pressure has forced most fast food restaurants to introduce healthier meal options for children. However, most people are still not happy and feel that more actions should be taken to fight childhood obesity.

In United States, California was the first to ban on soda in public schools. On April 27, 2010, a bill was approved by Santa Clara County's Board of Supervisors to set basic nutritional standards for children’s meals. Only restaurants providing meals that comply with the national nutritional criteria for children can give away free toys with meals.

Restaurants that offer foods with excessive calories, more than 120 calories for a beverage, 200 calories for a single food item or 485 calories for a meal, would not be allowed to use toys as rewards for the children who purchase the foods. Meanwhile, there will also be limits on sodium, excess fat and excess sugar.

In Santa Clara County, one in four youths are either overweight or obese. A doctor revealed that parents coming into his clinic admitted that they often buy Happy Meals and other fast food for their children because of the free toys included. He further added that the obese children entering his clinic include a 5-year-old with Type-2 diabetes. It is hoped that the new bill would help parents decide what meal option they want for their children.

There is no surprise that people in favor of the new bill were public health administrators, parents and doctors, and those who opposed were fast-food franchisees, other parents, and fans of fast-food toys.