A risk factor is something that increases your likelihood of getting a disease or condition.
It is possible to develop
with or without the risk factors listed below. However, the more risk factors you have, the greater your likelihood of developing obesity. If you have a number of risk factors, ask your doctor what you can do to reduce your risk.
Risk factors for obesity include:
If you eat high-calorie, low-nutrient foods, you are likely to eat more calories than you burn each day, thus increasing your risk of becoming obese. Another risk factor is eating until you are full and eating quickly.
If you are pregnant, your diet may also affect your child's risk of obesity. For example, skipping breakfast and smoking may increase your child's risk of becoming obese.
Children may also be at risk for becoming obese if they do not eat their regular meals with their family.
Lack of Sleep
Not getting enough sleep may put children at risk for obesity. How much sleep in enough for kids? Here are general recommendations:
Aged 5 years or younger—11 hours or more
5-10 years—10 hours or more
10 years or older—9 hours or more
Lack of Physical Activity
If you don’t get enough physical activity (exercise), you are likely to burn fewer calories than you eat each day, thus increasing your risk of becoming obese. For children, too little exercise and spending too much time watching TV or playing on the computer can increase their risk of gaining weight and becoming obese.
Working Varied Shifts
Working shifts at different times of the day and night increases your risk of becoming obese.
Medical Conditions and Medications
Certain medications, rare hereditary diseases, and hormonal imbalances (such as hypothyroid and Cushing’s disease) increase your risk of obesity.
If you are a smoker and want to
, you may worry that quitting will increase your weight. Keep in mind that you can overcome this weight gain by reducing how many calories you consume and by exercising more. Overall, the health benefits of quitting smoking far exceed the risk of gaining weight.
If you are pregnant, smoking may increase your child's risk of becoming obese.
The incidence of obesity more than doubles between the ages of 20 and 55. However, this may be related to a decrease in activity levels.
A recent study found that within 30 years, over half of a large group of normal-weight men and women became overweight.
Specific, rare hereditary diseases may increase the risk of obesity. In addition, there seems to be a general tendency for obesity to run in some families, though the reason for this is not well understood.
There is a higher incidence of obesity among certain races or ethnic groups. In the US, obesity affects 66% of middle-aged black women and 68% of Mexican American women, compared with 45% of white women.
Beers MH, Berkow R.
The Merck Manual of Diagnosis and Therapy
. 17th ed. Whitehouse Station, NJ: Merck & Co; 1999.
Harrison's Principles of Internal Medicine
. 14th ed. New York, NY: McGraw-Hill; 1998.
Vasan RS, Pencina MJ, Cobain M, Freiberg MS, D’Agostino RB. Estimated risks for developing obesity in the Framingham Heart Study.
Ann Intern Med.
12/2/2008 DynaMed's Systematic Literature Surveillance
DynaMed's Systematic Literature Surveillance
: Maruyama K, Ohira T, Maeda K, et al. The joint impact on being overweight of self reported behaviours of eating quickly and eating until full: cross sectional survey.
9/25/2009 DynaMed's Systematic Literature Surveillance
: Mizutani T, Suzuki K, Kondo N, Yamagata Z. Association of maternal lifestyles including smoking during pregnancy with childhood obesity.
Obesity (Silver Spring).
11/10/2009 DynaMed's Systematic Literature Surveillance
: Laurson KR, Eisenmann JC, Welk GJ, Wickel EE, Gentile Da, Walsh DA. Combined influence of physical activity and screen time recommendations on childhood overweight.
6/25/2010 DynaMed's Systematic Literature Surveillance
: Anderson SE, Whitaker RC. Household routines and obesity in US preschool-aged children.
Please be aware that this information is provided to supplement the care
provided by your physician. It is neither intended nor implied to be a
substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER
IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the
advice of your physician or other qualified health provider prior to
starting any new treatment or with any questions you may have regarding a