A weight management plan that is right for you depends on whether you are overweight or underweight. Our weight is determined by the amount of energy we take in as food and the amount of energy we expend in the activities of our day. Energy is measured in calories.
If your weight remains the same, you are probably taking in the same amount of calories you burn each day. If you're slowly gaining weight over time, your caloric intake is likely greater than the number of calories you burn through your daily activities. And the opposite is true – if you’re losing weight over time, you are likely burning more calories than you consume each day. This is why regular exercise and a healthy diet are crucial when it comes to controlling your weight.
The Body Mass Index (BMI) is a reliable indicator of healthy weight levels for most people and is used to screen for weight categories that may lead to health problems. The BMI number is calculated based on a person's weight and height and can determine if a person is underweight or overweight.
Adult BMI Calculator
Child and Teen BMI Calculator
In addition to preventing heart and lung diseases, maintaining a healthy body weight will reduce your risk for dozens of other health conditions.