I've been carnivore for about six months. I got alot of resistance from friends and family, especially because one of my besties is a natropath. If you want get past them you can say it's just a thing you're trying for 6-12 months. Even my natropath friend admitted in the short term it will likely have good results, but I think she's been suprised by my weight loss and the fact that a condition I've had for a decade has been greatly reduced so now I can and have been exercising again. I have energy and a clearer head. Although I take some supplements she insisted on.
All that to say, I would like to see some data if it exists too. I've been taking the I'm basically a meat machine so it makes sense to me to run me on a diet of meat. But the great improvements to my life I've seen mean I don't really want to go back but I may face some resistance from family and friends by next year if I don't.