Hormones and Dieting

im just wondering what effects long term dieting will have in general to a mans hormones. is a week off after every 8 or so weeks enough to stop alot of the damage? any one any experiences?

If you’ve been on a hard diet for a long time, I’ve seen lyle mcdonald recommend a full two weeks for a diet break to reset stuff.

What does Lyle Mcdonald say is a long time?