noun, noun which may take the genitive case particle 'no'
weak digestion; indigestion; dyspepsia
Medical and everyday term for a constitutionally weak stomach or tendency to indigestion. Often used in descriptions of health conditions.
彼は胃弱で、脂っこいものが食べられない。
He has a weak stomach and can't eat greasy food.
胃弱の人は消化の良い食事を心がけたほうがいい。
People with weak digestion should try to eat easily digestible meals.