Your life can be changed - and extended - by just a little regular exercise, according to a report by a blue-ribbon U.S. panel.

A commission empaneled by the federal Department of Health and Human Services says your most important exercise paraphernalia are your legs. The panel declares that a moderately paced half-hour walk five days a week will lower your risk of heart disease, diabetes, cancer and many other disorders. And the benefit will be conferred even if you're overweight or obese - and regardless of your age, race or gender. (Read more about Even a Little Exercise Confers Benefits)

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A recent understanding of the origins of brown fat cells - the "good" kind of fat that burns energy and keeps us warm - may lead to the discovery of new treatments for obesity. Researchers at the Dana-Farber Cancer Institute in Boston said they used a single molecular switch to turn immature muscle cells into brown fat cells in the lab. This suggests that brown fat may be more akin to muscle cells than traditional white fat cells.

Another team from the Joslin Diabetes Center in Boston found a protein important for bone growth helped promote the development of fat tissues in mice. Both teams claim their new findings lend understanding about the origins of brown fat, which releases energy, in contrast to white fat, which only stores energy. (Read more about Understanding "Good" Fat May Help Fight Obesity)

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A few doctors around the United States are beginning to use an elegant new procedure to reduce the size of the stomach, without incisions, in gastric-bypass-surgery patients who have started to regain weight.

Because their stapled stomachs start to stretch out and enlarge, some 44 percent of gastric-bypass patients regain weight after a few years, and again become subject to the morbidities of obesity.

But with the new technique, called "ROSE" (Restorative Obesity Surgery, Endolumenal), doctors can reduce the patient's stomach pouch and the opening (stoma) to the small intestine to their original post-gastric-bypass size. (Read more about Incision-Free Technique Treats Gastric-Bypass Weight Regain)

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Obese people do not always carry an increased risk of heart disease, while some individuals of normal weight do. Two studies published in the Archives of Internal Medicine, revealed that how fat was distributed, like fat around the abdomen, was a consistent risk factor for heart disease. People who have their abdominal cavity lined with fat appear to be more likely to develop insulin resistance and have a higher risk of cardiovascular disease. (Read more about Obesity Not Always Indicative of Cardiovascular Risk)

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Exercise may not halt the aging process, but mounting evidence suggests people who stay active can slow its effects. The latest issue of Mayo Clinic Women's Healthsource offers 8 benefits to regular exercise.

It Provides Energy: Feeling tired and lethargic is largely a result of being inactive. Endurance exercises like walking, swimming, jogging, biking, and rowing improves stamina and energy. Even after a few weeks in a walking program, people have more energy for activities.

It Improves Mental Health: There's considerable evidence that regular physical activity can help reduce stress, manage mild-to-moderate depression and anxiety, improve sleep quality, boost mood, and enhance the overall feeling of well-being. (Read more about 8 Ways Exercise Keeps You Young and Healthy)

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During this fall, the Institute of Medicine is expected to start gathering scientific evidence to support how much weight pregnant women should gain. The current guidelines, which were announced in 1990, recommends that women with low body mass index scores should gain 40 pounds, women with normal scores should gain 25-35 pounds, and obese women should gain 15 pounds. In 2003, around 25% of pregnant women in the U.S gained more than 40 pounds during pregnancy. (Read more about Pregnancy Weight Gain Recommendation Expected to Change)

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In America, it is estimated that 45 percent of women and 30 percent of men diet to lose weight. A recent study, published in the scientific journal Hypertension and led by David Gutterman has found low-carbohydrate diets to be significantly higher in total grams of fat, protein, dietary cholesterol and saturated fats than low-fat diets. Dr. Gutterman states, "While a low-carb diet may result in weight loss and an improvement in blood pressure, the higher fat content is ultimately more detrimental to heart health than the low-fat diet suggested by the American Heart Association." (Read more about For Heart Health Low-Fat Better Than Low-Carb Diets)

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The idea behind artificial sweeteners is simple: add the flavor of sugar without the calories of sugar. Sounds great, right? Well, a recent study now finds that eating artificial sweeteners could make people put on more weight when compared to normal sugar. Researchers conducted experiments on lab rats who were placed into two groups. One group was given yogurt sweetened with glucose, or the equivalent to table sugar. The other group was given yogurt sweetened with zero-calorie saccharin. The rats that had the saccharin-sweetened yogurt consumed more calories, put on more weight, gained more body fat, and did not cut back on their calorie consumption in the long term. (Read more about Artificial Sweeteners Could Contribute to Weight Gain)

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A recent study from Penn State has found that American children are drinking insufficient amounts of milk and the dairy they are choosing to consume are very high in fat. The study examined a children's daily dairy intake and compared it with the U.S. Department of Agriculture's MyPyramid dairy recommendations. The findings revealed that only 2 to 3 year olds met the MyPyramid dairy recommendations. It was also observed that most children choose to eat more of the highest fat varieties of cheese, yogurt, ice cream, and dairy based toppings. (Read more about American Children Are Not Consuming Enough Milk)

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A Review in The Lancet reveals the importance of healthy lifestyle choices to reduce stressors related to cardiovascular risk factors. Researchers from John Hopkins Hospital in Baltimore examined records between 1990 to 2006. They observed how stress affects the sympathetic nervous system, impacts physiology, and the effect it has on the cardiovascular system. Lead author, Daniel Brotman, claims "Acute physical stressors such as sugery, trauma, and intense physical exertion are well known triggers of cardiovascular events. Emotional stressors are increasingly recognized as precipitants of such events." (Read more about Reducing Stress Lowers Risk of Cardiovascular Problems)

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