Hi people I need an advice on natural estrogen blockers, my son will turn 15 in the next few days and he is developing gyno and I would like to know what's the most effective natural estrogen blocker to see if it helps and diminish the size of his nipples, doing some research the top ones I found are Wild nettle root and chrysin, but second opinions are a huge help, also, can a 15 year old kid take this natural products without developing any side effects? thank you.