Veganism is both the practice of abstaining from the use of animal products, particularly in diet, and an associated philosophy that rejects the commodity status of animals. The term vegan was coined in 1944 by Donald Watson when he co-founded the Vegan Society in England. At first this meant “non-dairy vegetarian” and later “the doctrine that man should live without exploiting animals”. Distinctions are sometimes made between several categories of veganism. Dietary vegans refrain from ingesting animal products. This means avoiding not only meat but also egg and dairy products and other animal-derived foodstuffs. Some dietary vegans choose to wear clothing that includes animal products (for example, leather or wool). The term ethical vegan is often applied to those who extend the philosophy beyond diet into other areas of their lives. This philosophy means opposing the use of animal products for any purpose. Environmental veganism refers to avoiding animal products on the premise that harvesting or industrial farming of animals is environmentally damaging and unsustainable.