The science-based thinking community understands the need for fact-checking all claims for their truthfulness. There are many fine websites that can do so. Fact-checking health claims of ads on the internet, unfortunately, it's not as easy as political or religious claims because the Google search in this area usually overwhelms the searcher with more ads posing as research. There is one proven website that focuses on scams in general and health claims in particular: Scam Detector.