BMI stands for body mass index which is a formula which relates body weight to height. This enables people to determine whether they are at a weight which is healthy for them.

Risk of Associated Disease According to BMI and Waist Size
BMI		Waist less than or equal to 40 in. (men) or 35 in. (women)	Waist greater than 40 in. (men) or 35 in. (women)
18.5 or less	Underweight	--	N/A
18.5 - 24.9	Normal	--	N/A
25.0 - 29.9	Overweight	Increased	High
30.0 - 34.9	Obese	High	Very High
35.0 - 39.9	Obese	Very High	Very High
40 or greater	Extremely Obese	Extremely High	Extremely High

If you worried with your weight, and how it relates to your calorie intake and needs, please don't hesitate to contact me.