For a height of 72 inches, and a weight of 250 pounds, the BMI is 33.9. For an 18 year old male, the value of the BMI indicates that Seth is obese. For an adult male to be considered healthy, he should have a BMI of 18.5 - 24.9. Lower than 18.5 is underweight, greater than 24.9 but less than 29.9 is overweight. Finally, BMI values greater than 29.9 is indication of obesity.