In the context of diet, "vegan" means abstaining from all animal products, including meat, dairy, eggs, and often honey. A vegan diet focuses on plant-based foods such as fruits, vegetables, grains, legumes, nuts, and seeds. Adopting a vegan lifestyle can have various health benefits, including lower risks of chronic diseases like heart disease and diabetes. However, it requires careful planning to ensure adequate intake of essential nutrients like protein and vitamin B12.