Health encyclopaedia - Alphabetical Topic List

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Causes of Obesity

The main cause of obesity is excess calorie intake.

Obesity does run in families and the tendency to put on weight is definitely greater in some people than in others who eat a similar diet. However, this is usually due to different metabolic rates.

A gene has recently been discovered that may play a role in obesity, but it is likely that family habits of eating and exercise are key factors.