I won't be surprised to hear a doctor say that overeating causes backache.
I won't be surprised to hear a doctor say that eating too much causes backache.
腰痛の原因が食べ過ぎだってお医者さんに言われても驚かないくらい
腰痛、backache, lumbago, lower back pain
~が原因、他動詞 cause
驚く、be surprised
直接的に表現してみました。
医者が~言うのを聞く、hear a doctor say that ~
I won't be surprised to hear a doctor say that overeating causes backache.
I won't be surprised to hear a doctor say that eating too much causes backache.