Animals are affected by vegetarianism as well as the environment and the people who partake in vegetarianism.

Vegetarianism

Called AHIMSA (non-violence) this goes beyond peace and anti-war and extends to what we might call Animal rights (Holy Cow!) and vegetarianism is a logical fission product of this doctrine. Vegetarianism as a form of respect for animal life, is NOT CHRISTIAN//

Yes; there is much heated debate as to what constitutes vegetarianism and how healthy it is.

Bodhipaksa has written:

'Living as a river' -- subject(s): Impermanence (Buddhism), Meditation, Buddhism

'Vegetarianism' -- subject(s): Buddhism, Budismo, Health aspects, Health aspects of Vegetarianism, Religious aspects, Religious aspects of Vegetarianism, Vegetarianism, Vegetarianismo