It takes more than just a diet to keep your weight in check.
A good
weight-loss programme must have behaviour modification for long-term
success. Regaining weight goes beyond just going back to old eating
habits. As you drop weight, your body triggers mechanisms which
encourage regain. There are several reasons why dieters can’t keep their
weight off.
Many studies have shown that when overweight or obese people lose
weight, their bodies undergo hormonal changes that increase hunger and
satiety. Leptin is a hormone produced by fat cells, which regulates
appetite.
It tells you when to stop eating. When the body loses fat
cells, leptin levels decrease. Lowered leptin levels trigger hunger and
make it harder to feel full with lesser food. Leptin levels can fall by
as much as 65-70 per cent when the body loses fat.
These hormonal changes persist and may even become permanent. Other
appetite regulating hormones like ghrelin and peptide YY also alter in a
way that favours weight gain.
There may be several other complex mechanisms and hormonal
changes which may make you put on weight because of which regain of
weight is a strong possibility. The nature of the diet also makes a
difference. Following fad diets or going back and forth on diets also
triggers the rebound effect. It lowers metabolism by 5-10 per cent,
favouring easy regain.
Then there is the issue changing habits. Without a permanent
change in unhealthy patterns of eating and living, it is highly unlikely
that weight loss will stick. For example, the benefits of having an
early dinner will last only until it is done, and if you go back to
eating late, you will begin to put on weight again.
The gut hormone peptide YY (3-36) is a 36-amino acid peptide secreted from L-cells in the intestinal mucosa of the ileum and large intestine in proportion to caloric intake. Peptide YY (3-36) (human) Acetate
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