The advice about animal products in the diet contributing hormones that may be either helpful or harmful depending on your own "hormone balance" is supported by some credible reports; but there is also the apparent ability for your own "body fat" to secrete a variety of hormones.

The mix of what oozes out of adipose tissue appears to be quite complex, and there is still debate about how it affects other body systems and functions; but at least some recent reports implicate high body fat as a cause of failure of obese adolescents to develop normal(whatever that is?) secondary sexual characteristics associated with pre-teen and teenage development. Estrogen, progesterone, and insulin all are claimed to have been identified as products of adipose tissue metabolism (along with a bunch of other stuff). The amounts usually seem to be small, but could be enough to shift ones basal levels(?).

There is insufficient agreement among the experts (that I've seen) to justify recommending extreme measures, but exercise and moderate control of "middle age spread" might help in maintaining a manageable balance of all those exotic juices. ... Or might not ...

At least, if you maintain reasonable fitness, you'll be able to run faster, throw straighter, and hit harder when one of those DUMB MALES who DOESN'T UNDERSTAND seriously NEEDS K....

(Guys: maintining yourself in good condition may be a big help in dealing with the PMT/PMS woman in your life. See above.)

John