最新研究顯示
https://jamanetwork.com/journals/jama/fullarticle/2758450
the use of folic acid and zinc supplementation by male partners,
compared with placebo,
did not significantly improve couples’ live birth rates
(34% vs 35%, respectively)
or semen quality measured 6 months after randomization.
意思是服用鋅或是安慰劑對於精液品質沒有顯著差異