The thing to remember is that popsci books are not peer-reviewed academic literature. They are the, generally unchecked, thoughts of the author. If you listen t

The thing to remember is that popsci books are not peer-reviewed academic literature. They are the, generally unchecked, thoughts of the author. If you listen to them, you do so at your peril as you are effectively performing alterations to your life based purely on the thoughts of one person. Much like with medicine, you should seek multiple qualified opinions.