A vegan diet is characterized by its exclusion of all animal products, including meat, dairy, and eggs. Instead, it emphasizes plant-based foods such as fruits, vegetables, grains, legumes, nuts, and seeds. This diet is often chosen for ethical, health, or environmental reasons. Additionally, vegans must be mindful of nutrient intake, especially vitamin B12, iron, and omega-3 fatty acids, which are typically found in animal sources. Adopting a vegan lifestyle also promotes increased consumption of fiber and a variety of phytonutrients inherent in plants.