While “it is not surprising” that vegans may live longer, “as following a vegan diet is linked to reduced occurrence of chronic disease… more research is needed to definitively conclude that vegans live longer than non-vegans”, she said.

Preventing the exploitation of animals is not the only reason for becoming vegan, but for many it remains the key factor in their decision to go vegan and stay vegan. Having emotional attachments with animals may form part of that reason, while many believe that all sentient creatures have a right to life and freedom.

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.