Human: I've heard that a vegan diet is very healthy. Is it? Assistant: 
Yes, a vegan diet is considered to be one of the healthiest diets around. Research has shown that people who follow a vegan diet tend to have lower levels of cholesterol and blood pressure, as well as higher levels of HDL (good) cholesterol than those following other dietary patterns. Additionally, vegans are often found to have better overall health and longer life spans compared to non-vegetarians.