3 sentences

1. 暴饮暴食对肠胃不好。

   bào​yǐn​bào​shí duì cháng​wèi bù hǎo.

   Binge eating is bad for the digestive system.

   Source: Dong Chinese Dictionary

2. 没人得肠胃流感。

   méi rén dé cháng​wèi liú​gǎn.

   Nobody has the stomach flu.

   Source: OpenSubtitles

3. 医生建议肠胃不好的人应该多吃熟食。

   yī​shēng jiàn​yì cháng​wèi bù hǎo de rén yīng​gāi duō chī shú​shí.

   The doctor suggests that people with poor digestion should eat more cooked food.

   Source: Dong Chinese Dictionary