yes Broderick is great, watch here from 48 Min :
https://youtu.be/HZWtfOLzRDk
He explains that zinc and chromium supplementation makes sense for enhanced athletes.
The hormones just trigger the metabolic pathways at a greater level. In order make them work properly you need more cofactors, the threhold for zinc suppl. e.g. increases.
Would be interesting if a good multi vitamin is sufficient…
