About 19 million American adults consume dietary fish oil supplements. These supplements, which primarily consist of the omega-3 fatty acids eicosapentaenoic acid and docosahexaenoic acid, are widely used as a remedy for chronic diseases. However, the effects of EPA and DHA supplementation on cancer risk have been inconsistent.
The incidence of multiple cancer types in people under the age of 50 has been rising, with early-onset cancers now contributing to nearly 15,000 excess cases of cancer in the U.S. annually.
