Study: Low-carb diet best for weight, cholesterol

Study: Low-carb diet best for weight, cholesterol on Yahoo! Health:
2008.07.17
"ATLANTA - The Atkins diet may have proved itself after all: A low-carb diet and a Mediterranean-style regimen helped people lose more weight than a traditional low-fat diet in one of the longest and largest studies to compare the dueling weight-loss techniques...A bigger surprise: The low-carb diet improved cholesterol more than the other two. Some critics had predicted the opposite...all three approaches — the low-carb diet, a low-fat diet and a so-called Mediterranean diet — achieved weight loss and improved cholesterol...The study is remarkable not only because it lasted two years, much longer than most, but also because of the huge proportion of people who stuck with the diets — 85 percent...Average weight loss for those in the low-carb group was 10.3 pounds after two years. Those in the Mediterranean diet lost 10 pounds, and those on the low-fat regimen dropped 6.5...But the low-carb approach seemed to trigger the most improvement in several cholesterol measures, including the ratio of total cholesterol to HDL, the "good" cholesterol...The ratio declined by 20 percent in people on the low-carb diet, compared to 16 percent in those on the Mediterranean and 12 percent in low-fat dieters...The new study's results favored the Atkins-like approach less when subgroups such as diabetics and women were examined...Among the 36 diabetics, only those on the Mediterranean diet lowered blood sugar levels. Among the 45 women, those on the Mediterranean diet lost the most weight... "I think these data suggest that men may be much more responsive to a diet in which there are clear limits on what foods can be consumed," such as an Atkins-like diet, said Dr. William Dietz, of the Centers for Disease Control and Prevention..."

Full article here - at NEJM.

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'Weight Training' Reduces Fat And Improve Metabolism In Mice

'Weight Training' Reduces Fat And Improve Metabolism In Mice ScienceDaily
2008.02.05
"... the use of barbells may be as important to losing weight and improving health as the use of running shoes...The discovery builds upon the fact that skeletal muscle consists of two types of fibers. Endurance training such as running increases the amount of type I muscle fibers, while resistance training such as weightlifting increases type II muscle fibers. Using a mouse genetic model, BUSM researchers demonstrated that an increase in type II muscle mass can reduce body fat which in turn reduces overall body mass and improves metabolic parameters such as insulin resistance..."Beyond the age of thirty, humans lose approximately 6 lbs of muscle mass per decade. Surprisingly, aging individuals predominantly lose type II muscle."...the beneficial effects of muscle growth seen in the MyoMouse are mediated through the production and secretion of a variety of signaling factors...These new proteins, referred to as "myokines" from the Greek words "muscle" and "motion,"..."


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Moderate Exercise Yields Big Benefits

Moderate Exercise Yields Big Benefits - ScienceDaily
2008.01.04
"...The January issue of Mayo Clinic Health Letter lists some of the benefits of 30 minutes of exercise a day:

• Lower blood pressure: A reduction of 5 to 10 millimeters of mercury (mm Hg) is possible. In some cases, that’s enough to prevent or reduce the need for blood pressure medications.
• Improve cholesterol: Exercise often increases the concentration of high-density lipoprotein (HDL or “good” cholesterol in the blood), especially when accompanied by weight loss. Exercise also helps reduce triglyceride levels.
• Prevent or manage type 2 diabetes: Exercise helps insulin work better, lowering blood sugar.
• Manage weight: Coupling exercise with a healthy diet is the best way to shed fat and maintain a healthier body composition.
• Prevent osteoporosis: Exercise may increase bone density and protect against bone mass decline, especially if weight-bearing activities are involved.
• Prevent cancer: Exercise has been shown to strengthen the immune system, improve circulation, reduce body fat and speed digestion. Each has a role in preventing cancer, particularly cancers of the colon, prostate, uterine lining and breast.
• Maintain mental well-being: Exercise may help reduce stress, improve mild-to-moderate depression and anxiety, improve sleep and boost moods.
• Increase energy and stamina: A lack of energy often results from inactivity, not age.""

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Calcium and Vitamin D lowers cholesterol during weight loss

Calcium helps cut cholesterol during weight loss Reuters/Yahoo!News 1/23/07 "Overweight or obese women who took calcium and vitamin D supplements while on a 15-week diet showed greater drops in LDL or "bad" cholesterol and increases in HDL ("good") cholesterol, Dr. Angelo Tremblay of Laval University in Ste-Foy, Quebec and colleagues found... two 600-milligram tablets daily of calcium and 200 IU of vitamin D...calcium appears to interfere with fat absorption in the gut. The mineral also helps the body mobilize and burn fat, and may also aid in appetite control"

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