西葫芦放久了苦了还能吃吗？刚才吃了个苦的西葫芦，有点担心，查一下网络。

网上说，西葫芦放久了苦是因为葫芦素（cucurbitacin）水平升高了。葫芦素是苦的，对细胞是有害的，最好别吃，严重的还会中毒。葫芦素水平增加与西葫芦的年龄、逆境协迫及生物因素（如基因型等）有关。

Why Is Zucchini Bitter?

https://rocketsgarden.com/why-is-zucchini-bitter/

Why Is My Zucchini Bitter? (And how to fix it!)

https://www.plantfoodathome.com/zucchini-bitter/

Cucurbit Poisoning: Causes, Symptoms And Prevention Of The Rare Condition

https://www.boldsky.com/health/disorders-cure/2018/cucurbit-poisoning-causes-symptoms-and-prevention-of-the-rare-condition-121548.html#:~:text=Cucurbit%20Poisoning%20or%20Toxic%20Squash%20Syndrome%20is%20caused,flavour%20and%20is%20harmful%20to%20the%20human%20cells.

Toxic squash syndrome: Here’s what to know and how to avoid it

https://www.simplemost.com/toxic-squash-syndrome-facts/