Husband's chronic heartburn ㅠㅠ

My husband experiences extremely severe heartburn whenever he eats certain foods or even overeats a little. ㅠ

Especially bread made with yeast (yeast-based bread), some wheat flour foods...

It's when you skip a meal or your stomach is empty and you eat food ㅠ

It seems that the pain is so severe that they need to take medication, not just a mild burning sensation.

Is there any way to reduce or improve heartburn? ㅠㅠ