Soooo...it depends on your age, right? Not clear how much is too much.
I believe that nads shrink with age. Could be a factor.
It seems to be how much your body needs for its condition, which would be hard to truly understand. It’s not the “one size fits all” it was believed to be.
If your health is poor, you could benefit more from more normal sized doses. People with COPD appear to need fairly more, to help with some healing, for instance.
Younger people don’t seem to need it much, or at all, however, their primary antioxidants and processes are still fully functioning.