乳にゅう糖とう不ふ耐たい症しょう

noun

lactose intolerance

Medical term for the inability to digest lactose, often due to lactase deficiency.

• 乳にゅう糖とう不ふ耐たい症しょうの人ひとは牛ぎゅう乳にゅうを飲のむとお腹なかを壊こわすことがある。

  People with lactose intolerance may get an upset stomach when they drink milk.