Can a virus cause weight gain?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Some scientists theorize that certain viruses (microorganisms that cause infections such as colds and flu) can cause excessive weight gain or obesity in animals. Laboratory studies have shown that infecting mice and hamsters with these viruses makes them gain large amounts of weight—a phenomenon called "infectobesity." Whether viruses cause humans to become obese is unknown, however.

Continue Learning about Obesity

Is Obesity Draining your Brain Power?
Is Obesity Draining your Brain Power?
Need some extra motivation to take off those excess pounds? We’ve got it for you! A report reveals, for the first time, that there’s a direct link bet...
Read More
Why is obesity dangerous?
UCLA HealthUCLA Health
Obesity is dangerous because it causes diseases throughout the body. It causes more than 70 illnesse...
More Answers
How can the obesity problem in America be solved?
Judith SalernoJudith Salerno
Solving the obesity epidemic will require a variety of interventions, says Dr. Judy Salerno, executi...
More Answers
Can Genetics Influence Obesity?
Can Genetics Influence Obesity?

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.