vegan diet; plant-based diet
Refers to a diet that excludes all animal products, often used in health, ethical, or environmental contexts.
She started a vegan diet for her health.
A vegan diet is a way of eating that excludes all animal products.
菜食 is a broader term for a vegetable-based diet, which may include dairy or eggs, while 完全菜食 explicitly excludes all animal products.
ベジタリアン (vegetarian) generally allows dairy and eggs; 完全菜食 is stricter, equivalent to vegan.
vegan
Compound of 完全 (complete) and 菜食 (vegetable diet), literally meaning 'complete vegetable diet'.