A vegetable-based diet; eating mainly vegetables and plant-based foods (vegetarian diet).
健康のためにしばらく菜食を続けている。
I've been following a vegetable-based diet for a while for my health.
あのレストランは菜食メニューが豊富だ。
That restaurant has a wide variety of vegetarian options.
菜食と肉食では栄養のバランスが違うので注意が必要だ。
The nutritional balance differs between vegetarian and meat diets, so you need to be careful.