Yo-yo dieting, or weight cycling, or the cyclical loss and gain of weight is associated with a higher death risk, researchers have warned.
A study found that this form of dieting leads to adverse health outcomes and 80 per cent of people who lose weight gradually regain either the same weight or even more than they had before going on a diet.
The Endocrine Society's Scientific statement on the causes of obesity found that this was because once an individual loses weight, the body typically reduces the amount of energy expended at rest, during exercises and daily activities.
While it increases hunger, thereby creating conditions for weight gain.
"This study shows that weight cycling can heighten a person's risk of death," said Hak C. Jang, Professor from the Seoul National University (SNU) in South Korea.