One method of determining your weight and health status is to calculate your Body Mass Index, which is a ratio of height to weight.

Clasification	BMI	Overall Health Risk.
Underweight	<18.5	Low, but risk of other clinical problems is increased.
Normal range	18.5 - 24.9	Average.
Overweight	25 - 29.9	Increased risk.
Obese	>30	Severe increase in health risk.

Xenical may be right for you if you are considerably overweight (at least 30% above ideal weight or a body mass index of 30 or greater). Xenical may also be right for you if you are overweight (at least 20% above ideal weight or a body mass index of 27 or greater) and also have other risk factors such as high blood pressure, high cholesterol, heart disease, or diabetes.

To calculate your body mass index take your weight in kg and divide by your height in meters squared.