Unfortunately, due to the highly restrictive nature of the diet, vegans are at risk of being deficient in certain nutrients such as calcium and vitamin B12 usually found in dairy and meat respectively.

Their reasons for eating this way vary. Some vegans do it to improve their health, as research shows that a plant-based diet could lower the risk of certain diseases. Others stay away from meat because they don't want to harm animals or because they want to protect the environment.

Some people may experience burnout from activism, doubts about the effectiveness of veganism, or personal values that change over time. These realisations can lead them to reevaluate their eating habits and ultimately walk away from veganism, seeking alternative ways to make a positive impact on our world.

A vegan diet is based on plants (such as vegetables, grains, nuts and fruits) and foods made from plants. Vegans do not eat foods that come from animals, including dairy products and eggs.