YoYo effect from dieting explained in Journal of Clinical Endocrinology & Metabolism

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...hormones related to appetite play an important role in your likelihood of regaining weight after dieting. A new study confirms that people with the highest levels of leptin and lowest levels of ghrelin are more likely to put the centimetres they lost back on again.

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The researchers analysed the role of the plasma levels of hormones such as ghrelin, leptin and insulin on weight recovery in 104 overweight people following a hypocaloric diet. After eight weeks, the group that had regained more than 10% of the weight lost was found to have higher levels of leptin and lower levels of ghrelin. No differences were observed in their insulin levels.

The results, published in the Journal of Clinical Endocrinology & Metabolism, also show that ghrelin has a specific impact on men and leptin on women.

"Some obese or overweight patients who gain more weight following a diet could even be identified before they embark on their weight-loss therapy, just by looking at their plasma levels of these hormones,"


http://www.sciencedaily.com/releases/2011/01/110111132215.htm




Interesting to note a 2008 study that shows aerobic exercise regulates ghrenlin.

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ScienceDaily (Dec. 19, 2008) — A vigorous 60-minute workout on a treadmill affects the release of two key appetite hormones, ghrelin and peptide YY, while 90 minutes of weight lifting affects the level of only ghrelin, according to a new study. Taken together, the research shows that aerobic exercise is better at suppressing appetite than non-aerobic exercise and provides a possible explanation for how that happens.




http://www.sciencedaily.com/releases/2008/12/081211081446.htm

K and R.

No, all people are exactly alike! :sarcasm: