### Chinese: 生理期前由于子宫充血和前列腺素释放过多，容易拉肚子。
### English: Before the menstrual period, due to uterine congestion and excessive release of prostaglandins, <v>diarrhea is easy</v>.

### Improved English: It is easy to have diarrhea before the period due to uterine congestion and excessive prostaglandin release.
