Health center
Weight & Nutrition
Healthy eating, obesity, weight loss and physical activity.

Key points
- The definition of obesity varies depending on what one reads, but in general, it is a chronic condition defined by an excess amount body fat.
- A certain amount of body fat is necessary for storing energy, heat insulation, shock absorption, and other functions.
- Overweight and obesity are both labels for ranges of weight that are greater than what is generally considered healthy for a given height.
- The terms also identify ranges of weight that have been shown to increase the likelihood of certain diseases and other health problems.
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