Weight, Fat, Genes & Genetics
Although most people gain weight because they eat too many calories, being fat doesn’t always mean you over-eat. Obesity and excessive fat storage stems from a combination of several factors.
Weight & Genetics
Genes influence how your body balances calories and energy. Children whose parents are obese tend to be overweight too. A family history of obesity increases your chances of becoming obese by about 25 to 30 percent.
Weight, Genes & Fat Distribution
Genetics don’t compel you to be obese. But by influencing the amount of body fat and fat distribution, genes can make you more susceptible to weight gain.
Your body shape, for example, generally falls into one of three categories: ectomorph, endomorph or mesomorph. (Your body shape is wholly determined by your genes.)
The slight frames of ectomorphs reflect a low capacity for fat storage. Endomorphs have the most fat-storage capacity. And mesomorphs have an in-between ability to store fat.
If you’re a rounded endomorph you may never have the lean body of an ectomorph or the muscular build of the mesomorph regardless of your weight.
Weight, Genes & Metabolic Rate
Some people have a naturally high metabolic rate – they burn more calories and fat than average even when they’re asleep. Other individuals, with different genes, need fewer calories for the same physical activity. These metabolic differences alone, however, aren’t great enough to account for weights that exceed the healthy ranges in weight tables.