The best strategy for losing excess weight and stored body fat combines a plan for behavior change with calorie reduction and increased physical activity. See Interested in Losing Weight?(link is external) from Nutrition.gov and Weight and Obesity > Practical, Healthy Weight Control for more information.We all need some body fat, but if stored fat is excessive it may increase risk of diet-related diseases such as heart disease, diabetes and some cancers. This is particularly true if excess fat is in the abdominal area. According to the CDC, a BMI of 25 or higher indicates that your weight may be unhealthy. If BMI is 25 or higher, a waist circumference of more than 40 inches in men and 35 inches in women indicates excess abdominal fat. CDC's Assessing Your Weight(link is external) can help you calculate your BMI and measure your waist circumference.