Mental disease never contributed to being unable to lose bodyfat. Same for testosterone.
I always thought many mental illnesses could contribute to being fat and unable to lose fat, illnesses such as: bulimia nervosa, binge eating disorder, and compulsive overeating come to mind..
Excerpt taken from:
http://en.wikipedia.org/wiki/Obesity - Under Medical Illness
Mental illnesses may also increase obesity risk, specifically some eating disorders such as bulimia nervosa, binge eating disorder, and compulsive overeating (also known as food addiction).Same for testosterone.
With age your testosterone reaches low levels and causes you to retain more body fat.
Here is a study:
Low testosterone levels
More than 100 Japanese-American men took part in the research. A number of measurements, including total body fat and testosterone levels, were taken at the start of the study. The same measurements were taken again seven years later.
The research team found a link between testosterone levels at the start of the study and changes in visceral fat. In other words, visceral fat increased to a greater extent in the men starting the study with low testosterone levels.
Visceral (pronounced viss-er-al) fat surrounds and protects your internal organs. Subcutaneous (pronounced sub-cue-tain-ee-us) fat, on the other hand, is stored just under your skin. Not only does it look bad, visceral fat precedes the development of type II diabetes in Japanese Americans. It's also been linked to high blood pressure and heart disease.
Further evidence linking testosterone and body fat comes from the National Institute on Aging. Researchers tracked a group of men, aged between 65 and 88, for six months. Compared with those using a "dummy" supplement, treatment with testosterone reduced subcutaneous fat by around 7%.
Testosterone exerts a dual effect on fat loss by increasing the number of beta receptors, the parts of a fat cell that help to break down stored fat and prepare it for use as energy. Testosterone also inhibits the activity of lipoprotein lipase, an enzyme that plays a role in storing fat.
Reference for that study:Tsai, E.C., Boyko, E.J., Leonetti, D.L., & Fujimoto, W.Y. (2000). Low serum testosterone level as a predictor of increased visceral fat in Japanese-American men. International Journal of Obesity and Related Metabolic Disorders, 24, 485-491
Would it be unfair to knock him because he's retarded? Yes. But retards can still get in shape. Derek Anthony does it all the time....
....Got me on that one!