Having a lot of visceral, liver, and muscle fat is a serious metabolic issue, not just a discipline problem, and reducing these types of fat changes how you feel and how your metabolism works, with muscle quality being important for longevity.

Higher amounts of fat in the liver are linked to older biological cardiovascular age compared to fat stored around the abdomen, with each 1% increase in liver fat corresponding to about 1.066 additional years of cardiovascular aging.

The amount of fat stored around internal organs and within muscles and the liver is more strongly linked to signs of aging in the heart and blood vessels than overall body weight measured by BMI.