Some sects of Hinduism for example Vaishnavism follow the purest form of vegetarianism as a perfect even though Shaktism and Tantric sects freely take in chicken, mutton (goat and sheep meat), fish and eggs. The reasons mentioned by Jains and Vaishnavas are: the theory of nonviolence (ahimsa) applied to animals;[181] https://www.cureayu.com/blogs/pain-relief/back-pain-causes