It’s estimated that half of all Americans take a health supplement every day, from fish oil to multivitamins to diet pills. The booming 30-billion-dollar-plus vitamins and supplements industry says these products can make consumers healthier - but a new Frontline investigation with The New York Times and the Canadian Broadcasting Corporation raises troubling questions as it explores the limited government regulation and oversight of supplement companies, examines cases of contamination and serious health problems, and reveals how it’s often hard to know what’s really in the bottles you buy. Even if what is in the bottles is real, critics contend that many supplements simply don’t work, and could even be doing harm, while the supplements industry maintains that its products enhance consumers’ lives, and that further regulation is unnecessary. With more than 85,000 supplements on the market each year, this is a must-watch for consumers looking to make informed choices about their health.