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Why Do Women Find It More Difficult to Lose Weight?

by Julia Samuel on  February 2, 2016 at 10:17 PM Research News   - G J E 4
Losing weight and staying fit is certainly an unending struggle, especially for women. A recent study suggests that there could be a reason why females find it more difficult to lose weight than men.
Why Do Women Find It More Difficult to Lose Weight?
Why Do Women Find It More Difficult to Lose Weight?
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Researchers say hormones responsible for regulating appetite, physical activity and energy expenditure work differently in the sexes.

‘Sex difference in physical activity, energy expenditure and body weight is driven by a specific source of protein in the brain.’
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The teams from the University of Aberdeen, University of Cambridge and the University of Michigan, used a mouse model to study how weight gain differs in each sex depending on physical activity and energy expenditure.

During the study, researchers were able to transform obese male into lean, healthy mice, but the same transformation did not occur in the female mice.

"Cells in this brain region make important brain hormones called pro-opiomelanocortin (POMC) peptides that are responsible for regulating our appetite, physical activity, energy expenditure and body weight.

In female mice the hormones only regulated appetite - they did not have the extra benefits. This study reveals that a sex difference in physical activity, energy expenditure and body weight is driven by a specific source of brain POMC peptides. 

This could have broad implications for medications used to combat obesity, which at present largely ignore the sex of the individual.

Professor Lora Heisler, Rowett Institute of Nutrition and Health, University of Aberdeen said, "The World Health Organisation reports higher rates of obesity in women worldwide, reaching twice the prevalence of men in some parts of the world."



Source: Medindia
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