In my research of couples infertility I have found that Women have something called PCOS which leads to infertility. What do men have?

I was trying to research on men but no I was not able to find much information. Like in women they have Hormonal imbalance. Do men have hormonal imbalances which can result in low sperm count or something else? Iam
Assuming. Sorry. I was unable to find much info on men.
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