Veganism is the ideas and underlying principles and beliefs as to why a person inevitably adopts a vegan diet. '
Vegan' only defines the type of diet.
Veganism has a commonality in principles, but is not exclusive, nor limited to the following;
Ethical - enabling animals to have rights to prevent torture, rape and murder of all sentient beings.
Environmental Sustainability - The impact animal production has on world. Ref. United Nations Report '07: Livestock’s
long shadow.
Health - Global Famine, The shortening of life spans, and obesity ~ mainly heart related illnesses. Animal born Diseases, Athleticism.
People adopt some, the whole or no beliefs, yet are still vegans. The main point is that
whatever path we have taken; it was a strong enough conviction to adopt a
vegan lifestyle.