<human>:  What are the benefits and drawbacks of a vegan diet?
<bot>: 
1. Benefit: The vegan diet is plant-based and avoids all animal products, so it is high in fiber and low in cholesterol, making it a healthy choice for many people.
2. Drawback: A vegan diet can be low in some essential nutrients, such as B vitamins, iron, and calcium, which may require supplementation or a more varied vegan diet.