I don't know if its just me who's noticed this, but if one pans out and takes an overview of the main diet fads over the past 30 years, one will notice that the main focus of a diet changes every 10 years or so.

Recall in the 90's when everything was "low-fat". Starting somewhere in the 2000's the health industry switched it over to "low-carbs".

In the 80's, if one wanted to build muscle they were told to eat as many carbs as possible. Nowadays one is supposed to eat as much protein as possible.

This is just diet information. Methods of exercise change too. In fact, they sort of cycle in a way.

Ever feel like the health industry is trying to pull one over on you?