I've been sick for a while and haven't been eating much. My nails became brittle and stopped growing and my hair started to become brittle and fall out, among other things. I need some ideas for high protein sources but I have some restrictions. I have endometriosis, so a lot of protein sources cause it to flare up. I can't eat soy, I can't eat a lot of grains and too many beans cause issues. I need about 40 grams a day and I struggle to even get half of that. Does anyone have any suggestions for protein that also isn't high in calories/fat? Nuts are great in small portions, but it would be impossible for me to eat a lot of them without gaining weight or causing my gallbladder to spasm.