I am not sure what your religion has to do with this but there is not much of a debate. Vegans should take supplements because of the lack of specific nutrients in their diets. I am not saying it is not healthy. Just certain nutrients are lacking.
God's original diet?
Was Jesus a vegan?
The Holy Eucharist literally transforms into the flesh and blood of Jesus.
Jesus lost most of his followers when he made this clear in John 6: 53-58. Many disciples left him because of this.
If you go to Nicoya in Costa Rica, another Blue Zone, you will see meat and dairy are a big part of their diet.