Even if you're not overweight, fat around your belly still raises your risk of heart disease.

Too much fat around the organs is linked to higher blood sugar, higher bad fats in the blood, and lower good cholesterol, which can lead to diabetes and heart problems.

Even among people classified as obese by BMI, about 1 in 4 men and 1 in 10 women don't have excess fat around their organs, showing BMI doesn't always reflect internal fat levels.