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Ovarian, fallopian tube, and primary peritoneal cancer prevention involves understanding risk and protective factors, and the evidence behind them. Get detailed information about specific risk and protective factors and prevention strategies for these cancer types in this clinician summary.

Recent scientific studies are beginning to show progress against the childhood obesity epidemic, but the numbers of young people affected by obesity remain at high levels. Learn what you can do to combat childhood obesity.

Recent scientific studies are beginning to show progress against the childhood obesity epidemic, but the numbers of young people affected by obesity remain at high levels. Learn what you can do to combat childhood obesity.

The numbers of young people affected by obesity remain at high levels. Learn what you can do to combat childhood obesity.

Jared B. Fox, PhD1, Frederic E. Shaw, MD, JD2 (Author affiliations at end of text).

* Based on responses to a question that asked, "Have you smoked at least 100 cigarettes in your entire life?" Respondents answering "yes" were then asked, "Do you now smoke cigarettes every day, some days, or not at all?" Current smokers have smoked at least 100 cigarettes in their lifetime and currently smoke every day or some days.

Hexavalent chromium is a form of the metallic element chromium. Chromium is a naturally occurring element found in rocks, animals, plants, soil, and volcanic dust and gases.

Millions of Americans and people worldwide are overweight or obese.

Radon is a colorless, odorless radioactive gas. It comes from the natural decay of uranium or thorium found in nearly all soils.

Autism, also known as ASD, is a spectrum of disorders that causes impairment in social interaction, as well as the presence of repetitive, restricted behaviors and interests.