Vlad Chituc, 23, stirs Quinoa Tabbouleh near an already-made portobello burger at his apartment in Durham, N.C., Wednesday, March 13, 2013.  Chituc, an atheist, is participating in Lent by converting from vegetarian to vegan, something he hopes to continue indefinitely as an act of good morals and good health. RNS photo by Ted Richardson

Vlad Chituc, 23, stirs Quinoa Tabbouleh near an already-made portobello burger at his apartment in Durham, N.C., Wednesday, March 13, 2013. Chituc, an atheist, is participating in Lent by converting from vegetarian to vegan, something he hopes to continue indefinitely as an act of good morals and good health. RNS photo by Ted Richardson