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Metabolic Disease Risk Increases With Abdoment Weight, Decreases With Thigh Weight

by Rathi Manohar on  October 6, 2010 at 8:54 PM Obesity News   - G J E 4
Increased abdominal weight heightens the risk of metabolic disease, while weight gain in the thighs and other parts of the lower body,decreases the risk as volunteers demonstrated to researchers.
 Metabolic Disease Risk Increases With Abdoment Weight, Decreases With Thigh Weight
Metabolic Disease Risk Increases With Abdoment Weight, Decreases With Thigh Weight
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"The cellular mechanisms are different. The accumulation of abdominal fat happens largely by individual cells expanding in size, while with fat gain in the femoral or lower body, it's the number of fat cells that increases. So, different mechanism, different impact," said Dr. Michael Jensen, Mayo Clinic endocrinologist and lead author of the study.

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Researchers recruited 28 volunteers to the research study.

They were overfed for eight weeks, consuming giant candy bars, ice cream shakes, high-calorie drinks and almost anything else they wanted to eat.

On average, participants put on 2.5 kilograms (kg) or 5.5 pounds (lbs) of upper body fat and 1.5 kg or 3.3 lbs of lower body fat.

Even prior to fat gain, the preadipocytes (cells with the ability to become mature fat cells) in the upper body showed an increase in RNA messages which prompt proteins to synthesize fat.

Fifteen men and 13 women participated in the study. Researchers measured body fat and fat cell size before and after the eight weeks of overeating.

According to researchers, the findings challenge the concept that the number of fat cells in the body remains stable in adults.

It also supports the idea that increased capacity to produce lower-body fat cells creates some form of protection to the upper body and potentially helps prevent metabolic disease which can lead to diabetes and other complications.

The study is appearing in today's Proceedings of the National Academy of Sciences (PNAS).

Source: ANI
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