Thứ Sáu, 14 tháng 11, 2008

Don’t Eat Fast, Eat Till Full if You Don’t Want to Get Fat!

Fearing of getting fat seems to be a great concern for many people as they are fully aware that once they become overweight, chances that they would develop heart disease, diabetes, high blood pressure and other medical complications would be higher. Therefore, they seek all means to reduce or at least maintain their weight. Perhaps people should now also eat slowly and not eat until they feel full to avoid gaining weight.

In a recent study, Japanese researchers from Osaka University announced that people who eat fast and eat until they feel full are 3 times more likely to grow fat, as compared with those who eat slowly and modestly. Their findings were published online on October 21, 2008 by the British Medical Journal (BMJ).

The participants, 1,222 men and 2,165 women aged between 30 and 69, were asked to closely monitor their own eating habits and BMI (body mass index), a benchmark of obesity.

From the data collected, about half of the men and just over half of the women ate until they were full, and just under half of the men and a little more than a third of the women ate quickly.

The researchers indicated that men and women who ate until full were twice as likely to be overweight when comparing to those who did not eat until full. Meanwhile, those who ate both fast and until they felt full were 3 times as likely to be overweight.

In the study, people who ate until full and those who reported eating swiftly, were tracked separately, and researchers found that those who ate until full had a higher calorie intake than those who ate fast.

According to the explanation made by other health experts, the drive to eat quickly is a genetic survival mechanism. In other words, humans are prone to over consume energy when it is available.

There are few reasons that would make such eating behavior to grow. Firstly, the sociology of food consumption changes with fewer families eating together. Secondly, more people eat while distracted, for instance, they eat while watching television programs. Finally, people eat fast food while on the go.

Meanwhile, the increased availability of fast food, which is energy-dense and served in substantially larger portions, could explain why people tend to eat beyond satiety.

Thứ Tư, 12 tháng 11, 2008

Study Seeking Way to Prevent Deadly Blood Clot in Stent Implanted Patients!

Every year, about 800,000 to 1 million American patients have one or more stents implanted inside their bodies to keep the artery open after it has been cleared out by angioplasty. While there is less than 1 percent has a clot form near the stent, there are still many complications, ranging from clots to strokes, heart attacks and even deaths.

In order to find out the best way to prevent potentially deadly blood clots from forming in heart patients who have artery-opening stents implanted, several competing drug and medical device makers are joining hands to start a new study, which also involves academic researchers and federal regulators, to find out how long patients should take blood-thinning medicine.

Since early this year, the trial has already been planned but the initial details were announced only on October 15, 2008 at a medical conference. The study will involve and be partly supported by the 4 United States competitors in the stent market plus 4 drug makers.

The multi-center study, which is expected to begin enrolling patients later 2008 or early 2009, will involve about 25,000 to 30,000 patients who have had one of the tiny, metal-mesh tubes implanted in a heart artery.

Most of these patients have today’s widely used drug-coated stents that will over time release a medication meant to prevent the artery from re-clogging. On the other hand, at least 5,000 of the participants will get older, bare-metal stents.

According to the investigators, patients in the study will get now-standard preventive treatment for a year after getting a stent implanted. Such treatment involves an anti-clotting drug and at least 81 mg of aspirin a day.

At the end of the one-year study, those who have no complications will be randomized, with half of them continuing on the dual blood-thinning therapy for an additional 18 months and the rest stopping it. Researchers will then determine which group had more heart attacks, strokes and deaths, as well as clots inside the stents.

Thứ Hai, 10 tháng 11, 2008

Can TCM Protect Kidney Damage in Diabetics?

When urine of diabetic patients contains a certain protein, which is a sign of kidney damage, or if their blood pressure is high, the doctors will normally prescribe them with medication to lower their blood pressure and protect their kidneys. Otherwise, patients who already have some form of kidney damage can end up with kidney failure.

However, these medications do produce side effects in some patients such as cough, which can be so bad for them that doctors might have to take off the medication. As such, other options should be explored for these patients.

Researchers at the Singapore General Hospital (SGH) in Singapore announced in April 2008 that they would conduct a study involving 60 diabetic patients. The purpose is to find out how well traditional Chinese medicine (TCM) could prevent kidney damage in diabetics, in comparison with the normal Western drug.

Over a period of 3 months, all the 60 patients in the study will be given the usual medication to lower their blood-sugar levels and for other conditions such as high cholesterol. However, these patients will be divided into 2 groups: half of them will be prescribed with enalapril, a commonly prescribed Western drug that protects kidney, and the other half will be given a concoction of 9 TCM herbs.

If the study can yield favorable results, TCM could well become a feasible alternative for those patients who cannot tolerate the normal medication.

In fact, a similar one-year study in Shanghai, China has shown that TCM prescription works as good as the standard drugs in protecting kidneys without the side effects.

Meanwhile, another 2 studies will be done by SGH to find out how effective the TCM can do for patients with blood disorders that cause a low platelet and anemia.

SGH are putting effort to conduct TCM-related research in 3 areas: patients for whom conventional medicine has failed, patients with chronic diseases, and cancer. If encouraging results could be found, those affected patients can at least be given with another option.

Thứ Bảy, 8 tháng 11, 2008

What Types Of Cereals Should Be Banned From Kids?

According to a new analysis by Yale University in New Haven, Connecticut, the breakfast cereals meant for children are less healthy than cereals for adults, and worst still, those that are ‘marketed the most aggressively to kids’ have the worst nutritional quality.

Through the study of 161 brands of cereals, the researchers published their report in the Journal of the American Dietetic Association indicating that the health claims by the cereal producers were often misleading. For instance, cereals sold as ‘low fat’ or ‘low sugar’ did not have low calories, and those brands sold as ‘whole grain’ though had more fiber, they also had as much salt, sugar, and fat as any other brands and had the same calorie content.

They also noted that children are often encouraged by both the food industry and public health authorities to eat breakfast, especially ready-to-eat cereals.

With an aim to comparing the nutritional quality of cereals targeted for children and those for adults, the researchers screened 161 brands of cereals, 46 percent of which were meant for kids. To be qualified in the study, the particular brand of cereal should have a character on the box, toys or games inside, or the company’s web site listed that brand as a children’s cereal.

The research team found that children’s cereals in fact had more sugar, sodium, carbohydrate and calories per gram than non-children’s cereals, and less protein and fiber, too. Meanwhile on average, more than one-third of the weight of children’s cereals consisted of sugar, comparing to less than one-quarter of the adult cereals.

While 56 percent of the non-children’s cereals met nutrition standards for foods sold in school, only 34 percent of the kid’s cereals did.

The growing number of overweight and obese kids would definitely worry their parents because the extra weight in these kids may just make them the possible candidates for heart disease, diabetes, high blood pressure, and many other sicknesses, as they grow older.

The advice from the researchers is that parents hoping to choose healthy cereals for their kids should search for those containing 4 or less grams of sugar per serving (about 1 teaspoon), at least 4 grams of fiber per bowl of cereal. Most importantly, once the parents decide to ban the heavily marketed cereals from their kids should stick to their decision. If they ever give in once, they are going to make their kid nag them even more.

Thứ Năm, 6 tháng 11, 2008

How Does Bee Gees’ Song Relate to CPR?

Do you find it interesting? When I saw a report titled “CPR with Stayin’ Alive Tune”, I was very surprise and I bet you would too. How did these two different entities relate to each other? By the way, CPR stands for cardiopulmonary resuscitation.

Guess what, a small research conducted by the University of Illinois medical school found that doctors and students could maintain close to the ideal number of chest compressions when they did CPR and at same time listened to the song Stayin’ Alive.

Stayin’ Alive is a song by the Bee Gees, released as a single in 1977, and was considered as one of The Bee Gees' most popular and recognizable songs. It was played in the opening scene of the popular disco film, ‘Saturday Night Fever’.

According to announcement made by the researchers on October 16, 2008, the old disco song, at 103 beats per minute, has almost the perfect rhythm to help jump-start a stopped heart. This is very close to 100 chest compressions per minute, as recommended by The American Heart Association.

Although CPR can triple survival rates for cardiac arrest when performed properly, many people hesitate to do it because they either are not certain about or have difficulty maintaining the proper rhythm. Stayin' Alive, which has a way of being stuck in one’s head, can help with this.

15 students and doctors were involved in the study, which consisted of two parts. First, they did CPR on mannequins while listening to the song on iPods, and the chest compressions were timed with the song’s beat. 5 weeks later, they did the same drill without the music but they were asked to think of the song while performing the compressions. The average number of compressions recorded was 109 for the first and 113 for the second time.

This showed that the song actually helped people who already know how to perform CPR, and this should warrant larger, more definitive studies with real patients or untrained people, according to the researchers.

In fact, The American Heart Association has been using the song as a training tip for CPR instructors for about 2 years.

A 28-year-old medical resident who participated in the study said he has revived real patients by keeping the song in his head while doing CPR. He admitted that he was not really a disco fan and he has been told that he has a complete lack of rhythm. However, he was surprise the song worked for him.

Thứ Ba, 4 tháng 11, 2008

How Is Obesity Paradox Related to People with Heart Disease?

As there are about 65 percent of Americans are either obese or overweight, the Centers for Disease Control (CDC) have in fact classified obesity as an epidemic in the United States. According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) and National Institutes of Health (NIH), obesity costs Americans more than $117 billion annually in health care.

If a person is obese, he or she will have a higher risk, ranges from 50 to 100 percent, of premature death than people of normal weight. Obesity is a risk factor for other diseases such as high blood pressure, heart disease and Type-2 diabetes.

However, recent studies have shown that obese people with chronic diseases have a better chance of survival than normal-weight individuals do. This finding is known as “obesity paradox”. Such an unexpected decrease in illness and death with increasing body weight or BMI is originally described in people with heart failure and in patients having angioplasty.

A study by researchers from St Luke's-Roosevelt Hospital in New York City found that overweight and obese adults with high blood pressure and coronary artery disease also had a lower risk of heart attack, stroke or death, compared with the normal-weight people. Nevertheless, the rationales behind such phenomenon are still unclear. Their findings were published in the American Journal of Medicine.

The effect of overweight and obesity on heart-related outcomes was investigated in 22,576 people who participated in a large study. These people had treated high blood pressure and coronary artery disease.

People who were overweight (BMI between 25 and 30), class I obesity (BMI between 30 and 35) and class II-III obesity (BMI 35 or greater) actually had lower risk of heart disease, stroke, or death than those who weighed normal (BMI between 20 and 25).

The researchers also noted that the so-called “obesity paradox” did occur in both men and women across all age groups, even though the blood pressure was better controlled in normal-weight patients.

While improved outcomes appear to be consistently linked to increased BMI, other health experts do caution that one should not conclude that weight reduction is detrimental in overweight populations.

Despite the “obesity paradox”, findings of numerous studies still clearly support the benefits of weight reduction in obese patients with heart disease.

Chủ Nhật, 2 tháng 11, 2008

Can China Be Spared From Epidemics of Lung and Heart Disease?

With the consistent high economic growth over the years, the living standards of Chinese people have been raised. This means that they can now eat better food usually with high fat, and their waistlines are correspondingly expanded. They also enjoy sedentary lifestyles because they travel more by car instead of bicycle they used to, and spend more time watching television.

In fact, more than 25 percent of Chinese adults were now considered overweight or obese, according to a report published in the US journal Health Affairs in July 2008.

A recent study published in “The Lancet” medical journal on October 20, 2008 warned that if efforts are not made to tackle the worsening diets and other unhealthy lifestyles of Chinese, epidemics of lung and heart disease seem unavoidable.

In the paper, the researchers believed that the pace and spread of behavioral changes including changing diets, decreased physical activity, high rates of male smoking and other high-risk behaviors has already accelerated to an unprecedented degree.

For instance, 177 million Chinese adults suffer from hypertension, partly because of high salt consumption. Another 300 million people smoke (majority of them men), and 530 million are exposed to second-hand smoke.

If present smoking rate is left to continue, it is estimated that 100 million Chinese men will die between 2000 and 2050, with many of their family members spending their life savings with an attempt for treatment.

Hypertension, unhealthy high-fat diet and smoking are possible risk factors for heart disease and, smoking, including second-hand smoke is closely related to lung disease.

Therefore, the China's government is urged to take necessary action (for example, launch campaigns) to discourage smoking and the intake of salt and fat. If steps are not taken in time, the burden of chronic diseases, preventable morbidity and mortality and associated health-care costs could then increase substantially. As a result, China would have to face a looming health crisis in the very near future.