Here’s an excerpt from my and Donal O’Mathuna’s book, Alternative Medicine: The options, claims, evidence, how to choose wisely. You find the book here. Each week, for the next 4 weeks, I’ll post another five warning signs.

So, when you suspect quackery or fraud, how do you know if your suspicions are right? What are some of the warning signs?

When evaluating a medical claim, here’s what to look for.