Same with me. I feel better when I eat meats.Very interesting. I don't think I have these genes. I only eat meat about twice per week but the times in my life I tried to cut it out completely I would just be exhausted and in a brain fog al the time. I have a low red blood cell count (normal, but on the very low end of normal) so when I do eat meat, I go for the higher iron meats. Eggs and sardines are also helpful to keeping my energy level steady.