As you put on weight in adulthood, your weight gain is mostly fat rather than muscle. This excess weight can lead to conditions that increase your chances of heart disease — high blood pressure, high cholesterol and diabetes.
One way to see if your weight is healthy is to calculate your body mass index (BMI), which considers your height and weight in determining whether you have a healthy or unhealthy percentage of body fat.
BMI numbers 25 and higher are associated with higher blood fats, higher blood pressure, and an increased risk of heart disease and stroke.
The BMI is a good but imperfect guide. Muscle weighs more than fat, for instance, and women and men who are very muscular and physically fit can have high BMIs without added health risks. Because of that, waist circumference is also a useful tool to measure how much abdominal fat you have. In general, men are considered overweight if their waist measurement is greater than 40 inches (101.6 centimeters, or cm). And women, in general, are overweight if their waist measurement is greater than 35 inches (88.9 cm).
Even small reductions in weight can be beneficial. Reducing your weight by just 10 percent can decrease your blood pressure, lower your blood cholesterol level and reduce your risk of diabetes.
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