Frequently Asked Questions
About WEIGHT LOSS
Below are some answers to Frequently Asked Questions about weight loss. Click on a question for the answer.
- How do I know if I’m overweight or obese?
- How do I calculate my BMI?
- Why am I overweight?
- What factors contribute to being overweight or obese?
- What are the health effects of being overweight or obese?
- How can physical activity help?
- Where can I get more information about weight loss?
How do I know if I’m overweight or obese?
Find out your body mass index (BMI). BMI is a measure of body fat based on height and weight. People with a BMI of 25 to 29.9 are considered overweight. People with a BMI of 30 or more are considered obese. Return to Question List
How do I calculate my BMI?
You can find out your BMI by using the calculator at www.nhlbisupport.com/bmi/bmicalc.htm or the chart at www.nhlbi.nih.gov/guidelines/obesity/bmi_tbl.htm. Return to Question List
Why am I overweight?
Simply put, you can become overweight or obese when you eat more calories than you use. A calorie is a unit of energy in the food you eat. Your body needs this energy to function and to be active. But if you take in more energy than your body uses, you will gain weight. Return to Question List
What factors contribute to being overweight or obese?
Factors commonly affecting weight gain include:
- Environment and culture
- Genes
- Habits and behaviors
- Bigger portion sizes
- Little time to exercise or cook healthy meals
- Using cars to get places instead of walking
What are the health effects of being overweight or obese?
Being overweight or obese can increase your risk of:
- Heart disease
- Stroke
- Type 2 diabetes
- High blood pressure
- Breathing problems
- Arthritis
- Gallbladder disease
- Some kinds of cancer
How can physical activity help?
It’s well known that regular exercise plays a large part in maintaining a healthy weight. It can also help with weight loss, when combined with lower calorie intake. Regular physical activity can also improve your cardio, respiratory and muscular fitness. For older adults, activity can improve mental function. Return to Question List
Where can I get more information about weight loss?
Here are some links to organizations where you can get additional information on weight loss and related topics:
- Food and Nutrition Information Center
- U.S. Department of Agriculture
- The President’s Council on Physical Fitness and Sports
- Steps to a HealthierUS
- Food and Drug Administration (FDA)
- International Food Information Council



