The female hormone oestrogen , protect the brain. 女性的雌激素， 保護大腦。

Alzheimer's: Why are women twice as likely to get it?: Experts think it's linked to hormones - and having a hysterectomy can hugely increase your risk | Mail Online http://www.dailymail.co.uk/health/article-2194423/Alzheimers-Why-women-twice-likely--Experts-think-linked-hormones--having-hysterectomy-hugely-increase-risk.html