Vegan diet does not include animal products. 

Vegan diets are regarded as appropriate for all stages of the life-cycle by:

• the American Academy of Nutrition and Dietetics,
• the Australian National Health and Medical Research Council,
• and Dietitians of Canada.

Additionally, from Academy of Nutrition and Dietetics, :

Plant-based diets are more environmentally sustainable than diets
rich in animal products because they use fewer natural resources and are
associated with much less environmental damage.

Vegetarians and vegans are at reduced risk of certain health
conditions, including ischemic heart disease, type 2 diabetes, hypertension,
certain types of cancer, and obesity.