A proverb meaning that eating moderately (stopping when eight-tenths full) helps keep you healthy and reduces visits to the doctor.
母はいつも『腹八分目に医者いらず』と言って、食べすぎを注意する。
My mother always says 'eat until eight-tenths full; you won't need a doctor' and warns me about overeating.
健康診断の結果がよくなかったので、医者に『腹八分目に医者要らず』を心がけるよう勧められた。
My health checkup wasn't great, so the doctor advised me to follow the saying 'eat moderately and you'll need the doctor less.'
長生きのためには腹八分目にするという考え方は、現代の食事習慣にも当てはまる。
The idea of stopping at eight-tenths full for longevity applies to modern eating habits as well.