There are more and more people choose vegan diet in recent years. Nowadays, people have more and more food choices, more and more meat substitutes have appeared, and other product specially produced for vegetarians. Therefore, is vegan diet healthy or it is just a different lifestyle? Some people believe Vegan diet is healthier than traditional diet. Is that true? What do we need to know before we start a new diet? We have Evangeline Mantzioris, Program Director of Nutrition and Food Sciences from University of South Australia, joined us today.