It is not my opinion, it is the opinion of every major health organization in the world. Sometimes conventional wisdom is right.
Also i do not have to do a N=1, vegans all around the world prove it already. Like i said, a protein deficiency might very well just be a vitamin or mineral deficiency. You cant eat a protein free diet, it is not possible.
It's definitely possible to be vegetarian and primal while getting enough protein. I g through phases when I just don't feel like eating meat myself. During those times, I go with eggs and Greek yogurt for my protein sources. Btw, if your friend eats fish, they're not vegetarian
F 28/5'4/100 lbs
"I'm not a psychopath, I'm a high-functioning sociopath; do your research."
I believe Mark did a post recently and his wife is a vegetarian but eats fish (Pescetarian? Not sure). And she looks fantastic.
High Weight: 225
Weight at start of Primal: 189
Current Weight: 174
Goal Weight: 130
Primal Start Date: 11/26/2012
I think you can do perfectly fine as a vegetarian that eats fish/dairy and eggs. My fiance is primal and is a lacto-ovo vegetarian. If she would just include fish or even fermented cod liver oil her diet would almost become bulletproof. I don't think its a requirement to eat meat when you are doing paleo/primal. I personally try to eat as much fish as possible over meat and poultry.
"If man made it, don't eat it" - Jack Lallane
People say I am on a "crazy" diet. What is so crazy about eating veggies, fruits, seafood and organ meats? Just because I don't eat whole wheat and processed food doesn't make my diet "crazy". Maybe everyone else with a SAD are the "crazy" ones for putting that junk in their system.
About protein... I'm perfectly well aware this doesn't prove anything, but here are a couple of changes I noticed when I switched to meat-eating Primal from lacto-ovo-whole-grain vegetarian of 20 years:
- faster-growing nails
- thicker hair - that is, the individual hairs are about twice as thick
- no more split ends - really striking, as it used to be hard to find a hair that wasn't split
- gradual, slight improvement in hair coverage - I have female pattern baldness, and while shiny scalp is still perfectly visible, it's not as bad.
Of course, it's impossible to say which health benefits came from what I cut out, and which came from what I added in, and which of the added nutrients made the greatest difference. But my best guess would be that hair and nail differences are because my body's no longer having to economise on protein.
In general i think you have to pick only one fuel for fat loss. In my case it would be carbs so fat would have to be semi low, which would eliminate nut butters. Also it depends on your definition of low. I don think calories should ever be restricted to far, usually it causes more problems then fat loss. But yes, i dont think carbs cause you to eat out of control if they are from the right sources and it you are getting enough calories and nutrients.