Why people who follow Jainism don't eat root vegetables (Potato, Onion, Garlic etc)
I think this is the perfect answer for this question. https://www.quora.com/Why-do-Jains-not-eat-onion-and-garlic Also, please refer to this article for 'Jain vegetarianism'. https://en.wikipedia.org/wiki/Jain_vegetarianism