subject: Weight Management Is My New Lifestyle [print this page] Underweight is less than 18.5Underweight is less than 18.5. Healthy weight is 18.5 to 24.9. Overweight is 25 to 29.9. Obese is 30 or higher.Your BMI is not a direct reflection of your overall health. Obtain a waist measurement by using a measuring tape and put it around your waist this being just above your naval. The ultimate healthy waist is: 32 inches or less for women, and 40 inches or less for men. I am determined now to take control of my weight. I intend to take small steps to reach my weight management goals, that my doctor and myself have set.