I am so horrified by the fad diets on social media

One of my friends is telling me about the “snake diet” and how you just need to starve yourself or ear one meal every few days to lose 100lbs quick. It sounds totally insane! And I looked up this guy’s video on youtube and stopped it within 6 seconds because he looks like a total douche and yells out “Hey fatty!! You want to lose some weight?”

He’s a fat shamer and is pushing his own terrible agenda for likes, follows, and ad revenue. It is truly horrifying that people see things like this and just believe it must be healthy because he’s a fitness trainer.

How do I tell my friend it is soooo wrong on so many levels to listen to this guy?