human
I need to lose weight. How do I know what is a healthy weight for me?
assistant
It's important to determine your body mass index (BMI) and consult with your doctor to find out if you are within a healthy weight range. BMI is calculated by dividing your weight in kilograms by your height in meters squared, and it can be used as an indicator of whether or not you may be at risk for certain health problems related to being overweight or obese.