
Why Waist Size May Tell You More About Health Risk Than Body Weight
Two people can weigh exactly the same and carry that weight very differently. Waist circumference adds information the scale and even BMI can miss.
Why body composition tells a different story from body weight, and what the research shows about changing either.

Two people can weigh exactly the same and carry that weight very differently. Waist circumference adds information the scale and even BMI can miss.

Belly fat can include subcutaneous fat under the skin and deeper visceral fat around the organs. The deeper compartment is more strongly associated with cardiometabolic risk.

Body weight is only the total. It cannot tell whether you are losing fat, gaining muscle, shrinking your waist, or improving fitness.

After weight loss, appetite tends to rise while energy needs fall. These biological adaptations help explain why maintaining a lower weight can be harder than reaching it.

Weight loss usually includes some lean tissue, but resistance training, adequate protein, and a sensible calorie deficit can shift much more of the loss toward fat.
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