Friday, September 02, 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.

Wednesday, August 24, 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.

Wednesday, August 10, 2011

Do You Want Your Heart Disease Risk Doubled?

While cigarette smoking can induce numerous medical disorders to smokers themselves, people who are exposed to smokers’ tobacco smoke are also at a high risk of getting similar medical disorders. One of the disorders is heart disease, one of the leading killers in the world.

Researchers from the University College London reported that people who are around smokers and breathe in a lot of smoke are twice as likely to die from heart disease as those who are exposed to lower levels of secondhand smoke. Their study, which covered more than 13,000 people in England and Scotland, was published on June 29, 2010 in the ‘Journal of the American College of Cardiology’.

A saliva test was used to measure the amount of secondhand smoke people have been exposed to and the participants were followed for an average of 8 years, keeping track of who developed heart disease and who died.

It was found that 32 out of about 1,500 people who had never smoked but were exposed to high levels of secondhand smoke died of heart disease. In comparison, only 15 out of about 1,000 people who never smoked but with low exposure. Their analysis, which was restricted to never-smokers only, showed that high secondhand smoke exposure was linked to more than a 2-fold increased risk of dying from heart disease.

High level of exposure, according to the definition set by the researchers, would be equivalent to living with a smoker and exposed to secondhand smoke almost every day.

This is definitely not the first study to reveal such association. In a 10-year study published in 1997 in the journal ‘Circulation’, researchers from the Harvard School of Public Health reported that women who never smoked but regularly exposed to other peoples’ smoking in home or work had their risk of heart disease almost doubled.

More than 32,000 healthy women who never lighted up a cigarette were tracked. These women, aged between 36 and 61 when the study began, suffered 152 heart attacks, 25 of them fatal.

In order to prevent heart disease, smokers are urged to give up this unhealthy and selfish habit for the sake of their loved ones. Meanwhile, people staying with smokers should strive to help them quit smoking so as to lower the risk of heart disease for all in the house.

Thursday, July 28, 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.

Wednesday, July 13, 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.

Wednesday, June 29, 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.

Saturday, June 18, 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.

Friday, June 10, 2011

What Would Heart Disease Cost United States 20 Years Later?

Most people are aware that heart disease is a chronic disease and the cost of treating it can never be cheap. When the condition of a heart disease patient is serious enough that it cannot no longer be treated by medication alone, he or she might need to undergo heart by-pass surgery or even heart transplant. Though advancement of technology has reduced the medical cost substantially, the amount of money that patients need to pay is still considered huge for most people.

Heart disease is the number one cause of death in most developed countries including United States, where one in 3 people has some form of heart disease. Every year, 17 percent of the cost of medical care, which is about US$273 billion, is meant for heart disease.

A study published on January 24, 2011 in ‘Circulation’, a journal of the American Heart Association (AHA) estimated that the cost of treating heart disease in United States are expected to triple to US$818 billion per year by 2030.

Based on the current disease rates, an expert panel of AHA expanded the cost according to projections from United States census data about approaching shifts in the population. The researchers also assumed that there would be no new discoveries made between now and 2030 to stop the tide of heart disease.

As revealed by the panel, 36.9 percent of Americans have some form of cardiovascular disease such as high blood pressure, coronary heart disease, heart failure or stroke presently. The number of people affected would increase to 116 million or 40.5 percent. Patients with stroke and heart failure are expected to increase the most by about 25 percent.

Most heart disease, according to AHA, is preventable if people can stick to healthy diet and adequate exercises. Unfortunately, many people do not seem to follow such advice. Meanwhile many heart disease patients do not take their medications as directed or drugs are not optimally prescribed to them. All these can further raise the cost of treatment.