Restricting the amount or types of food eaten for medical treatment or weight management; often done under a doctor's guidance.
糖尿病のため、医師に食事制限を指示された。
Because of diabetes, my doctor instructed me to follow dietary restrictions.
ダイエット中でも極端な食事制限はおすすめしない。
Even while dieting, extreme dietary restriction is not recommended.
入院中は医師の指示に従って食事制限を守った。
While hospitalized I followed the dietary restrictions ordered by the doctor.