As a doctor, she didn't need him mansplaining how to take care of her health.

解释 mansplaining 是由 man（男人）和 explaining（解释）组合而成的合成词，指"男性以居高临下的态度向女性解释她本已了解的事物"，带有贬义色彩。这个词反映了性别偏见中男性常认为自己对所有话题都比女性更了解的现象。