Veganism is a philosophy and lifestyle that seeks to avoid exploiting animals for food, clothing, product testing, and entertainment. The Veganuary campaign raises awareness of veganism and encourages people to try a vegan diet for the month of January. While vegans avoid meat and dairy, ensuring adequate intake of vitamin B12 from fortified foods or supplements is important as it is found naturally in animal products. Adopting a vegan diet can provide health benefits like reduced risk of cardiovascular disease and help the environment by reducing greenhouse gas emissions from animal agriculture.