He wants to get married but his sperm count is low; does he have to disclose that?

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Check below answers in case you are looking for other related questions:
Is it sufficient to tell his fiancée of a fault or must he tell her family too?
It is not permissible for a fiancé to be alone with his fiancée

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Related Answers:
Proposal procedure according to sharee’ah
He is attracted to a woman who is engaged to someone else
He is afraid that he will offend his friend if he proposes to his sister
Is it sufficient to tell his fiancée of a fault or must he tell her family too?
It is not permissible for a fiancé to be alone with his fiancée

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