NPR | Should You Keep Taking Those Fish Oil And Vitamin D Pills? NPR Nearly 19 million Americans take fish oil supplements and some 37 percent of us take vitamin D. Many may be motivated by research that has suggested these pills can protect heart health and prevent cancer. On Saturday, NPR published a story on ... How some journalists got hooked by fish oil and vitamin D spin Should I Take Vitamin D and Fish Oil to Reduce My Risk of Heart Disease and Cancer? Big studies give mixed news on fish oil, vitamin D |