The Testosterone Protocol, from Life Extensions Foundation, is a ‘must read’ for any man interested in hormone (testosterone) replacement therapy.

Cengenics has links to articles and abstracts about Andropause.

An article on Andropause can be found at Women’s Health Connection.

Information on the prostate gland, and progesterone for men, can be found on Dr. Lam’s website.

Supplements for prostate protection, which lower the amount of estrogen and DHT made from testosterone, often contain a combination of products that work in synergy

Chrysin with piperine is a natural aromatase inhibitor which blocks the enzyme that converts testosterone to estrogen.

A chart with options for hormone replacement for men is provided by Women's International Pharmacy.