For what it's worth:
I eat paleo, with an emphasis on wildcaught fish (every day), avocados, green vegetables, and intermittent fasting. I have cut out all sugar, grains, starches. I eat dairy and legumes very occasionally. No land animal meat. Very low carb (around 50-75g a day).
Since committing myself to this lifestyle, my rheumatoid arthritis inflammation has calmed down (not completely biut it's noticeably better), I am *way* more mentally clear, emotionally stable, open-hearted and mature. I used to have pretty bad anxiety and depression that I can't say I've experienced while sticking to this diet. The moment I eat something with sugar or grains in it, the anxiety returns, and my joints flare up with inflammation.
I did not read about the paleo diet and then take on its principles. I arrived naturally at this diet by observing which foods make me feel good, and which ones make me feel bad. Then one day, I came across the paleo diet on the internet and was like "Hey! This is what I already do! There's a *name* for my diet! Finally!" Open to any questions about reducing inflammation via diet alteration. I have a lot of personal experience in the area. YMMV, of course.
YMMV. Paleo is not for everyone, just as raw veganism is not for everyone. You can throw studies around all ya want, but it really boils down to what works for you. What you need to do is not be convinced of anything; you just should be open to changing your diet, if only experimentally, to see how you feel. Self-observation is key.