@Jennifer
Good point. I generally like meat for protein but yeah, you're right about seafood or dairy also being good sources. I must have had similar effects from vitamin and nutrient deficiencies because I had signs of hypothyroidism (overweight, thinning hair, low energy, slow digestion, etc) for several years. Also a lot of sugar cravings while eating crappy food.
I think red meat and reducing pufa helped me initially. Now I worry more about getting variety and not skipping things like gelatin, greens, etc., and have been much better in the last 4 years.
Maybe you know why - but it's hard to find high protein sources that are also low in fat. Beans and seafood, for example, are always touted as good protein sources. Chicken breast I suppose is low fat. Low or nonfat dairy is good as well. My issue is that I'm never satiated with low fat protein sources. It will lead to me adding butter, olive oil, or something else with fat, naturally. It really is the predicament for trying to consume less fat daily and still get protein needs. But, this is why I question the supposed protein requirements. Sugar IIRC doesn't have any recommended daily requirement, which is really interesting. I've never felt worse eating more fruit, but I wonder if eating more fruit can reduce the craving for protein??