The document discusses reasons why one should be vegan, including health benefits, environmental impacts, and ethics. It notes that veganism is a lifestyle, not just a diet. Health reasons include reduced risk of disease and comments from nutrition organizations. Environmental impacts include the livestock industry's contribution to greenhouse gas emissions, water consumption, and deforestation. Ethical reasons discuss the treatment of animals in the livestock industry. The document concludes that vegan food is delicious and that veganism benefits both humans and animals.