Jerry Brainum recently (late 2008) did a two part article on D in Iron Man
Magazine. For those who don't know Jerry, he's a science writer whose work
bridges longevity and peak athletic performance nutrients. If you join as a
friend his Facebook account, you'll find almost daily updates and links to
news and journal articles.

In the current IMM he has a great article demystifying long standing
nonsense about testosterone, including supplemental usage for those
afflicted by diminishing amounts due to andropause (a condition induced
earlier than normal by vasectomies).