Doctors and Nutritionists make a lot of stuff up.
https://www.old-time.com/commercials/1940‘s/More%20Doctors%20Smoke%20Camels.html#:~:text=The%20brand%20of%20cigarette%20the%20doctors%20named%20most,and%20%20%20%20%20%20%20throat.
sell more drugs, no?
My doc goes crazy that i am not on meds.