Usage patterns
〈人〉は腸が弱いto have a weak stomach/intestine
He has a weak intestine and often gets diarrhea.
腸を切除するto surgically remove part of the intestine
A part of the intestine was surgically removed.
腸の調子を整えるto improve/regulate the condition of one's intestines
I eat yogurt to keep my intestines in good condition.
腸内環境を良くするto improve the gut environment/flora
Fermented foods are said to improve the gut environment.
Expressions
九回の腸gut-wrenching anguish; deep grief; heartbroken thoughts