I am 61 years old, and interested in increasing my available
testosterone level to keep young. I have been looking at 3 products,
brandnamed Tribulus, ZMA, and 6-Oxo.

However, I have had some almost cancerous prostate cells (PIN level 2)
that, happily, disappeared a couple of years ago. Are any of these
products not a risk for me? Also, are there other ways other than good
health and exercise for me to achieve better available testosterone?

Note: I believe my available testosterone levels are normal for my
age, and I still am able to have active sex with my rather younger,
healthy, and attractive wife. But her drive is much stronger than
mine.