PROBLEM TO BE SOLVED: To provide leafy vegetables which can be safely ingested.SOLUTION: The present invention provides a leafy vegetable in which the difference between the sodium content of inner leaves and the sodium content of an intermediate leaves is greater than the difference between the sodium content of the intermediate leaves and the sodium content of the outer leaves, and the potassium content of the intermediate leaves is lower than the potassium content of the outer leaves, in any leafy vegetable of lettuce, leaf lettuce, Korean lettuce, Brassica campestris or Brassica oleracea having inner leaves located at the center part, an outer leaves located at the outermost part, and intermediate leaves located between the inner leaves and the outer leaves.SELECTED DRAWING: Figure 3B【課題】安心して摂取できる葉野菜を提供すること。【解決手段】中心部に位置する内葉と、最外部に位置する外葉と、前記内葉と前記外葉との間の中間に位置する中葉と、を備えるレタス、サラダ菜、サンチュ、コマツナまたはキャベツのいずれかの葉野菜において、前記内葉のナトリウム含有量と前記中葉のナトリウム含有量との差が、前記中葉のナトリウム含有量と前記外葉のナトリウム含有量の差よりも大きく、前記中葉のカリウム含有量が前記外葉のカリウム含有量よりも少ない葉野菜。【選択図】図3B