See-sawing of losing weight

Why is it so hard to lose weight? Or even worse, when you reach your goal weight, the pounds pile on much faster afterwards!

Research released last week in the New England Journal of Medicine shows changes in levels in the blood of many hormones involved in hunger and weight regulation. These changes cause the dieter to fell hungry and bounce up the weight … for up to A YEAR after the initial weight loss. These hormones decreased significantly in the bloodstream:

  • Leptin
  • Peptide YY
  • Cholescystokinin (CCK)
  • Insulin
  • Amylin

These increased:

  • Ghrelin
  • Gastric Inhibitory Polypeptide (GIP)
  • Pancreatic Polypeptide (PPP)

They also asked about appetite – and significantly more dieters in the study say they had increased appetite.

Leptin, Peptide YY, CCK, Insulin, Ghrelin, GIP, Pancreatic Polypeptide and hunger were still altered one year after weight loss.

What does that mean? You have to keep on your diet for AT LEAST A YEAR after you reach your goal weight before these levels may even return to normal levels, if they even do that at all.  That’s why they say the most successful diets are those that change your habits and mind as well as your food and portions.

Those of you studying the endocrine system now: go over these hormones – changes in their levels would cause what changes in the dieter’s body? How will that affect them in losing weight and keeping it off?

Source:

http://www.nejm.org/doi/full/10.1056/NEJMoa1105816

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