So I have to deal with bad IBS and atm I'm happy eating paleo. It doesn't make it much better, but I like the idea of eating real food. If I feel like crap on SAD, it's still better being paleo and feeling like shit but without eating crap - well, nevermind.
I was just wondering if there is any way one could eat too much protein? The best food that works for me is fish, I eat it daily because it doesn't give me tummy aches. Plus a lot of eggs, sometimes cheese, some nuts, meat, and veggies, mostly avodacos and greens.
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Yes, it is technically feasible to eat toxic levels of protein. This is often estimated at 250-300g of protein for women, and 300-400g for men.
It is incredibly unlikely that you will take in toxic levels of protein on any diet, let alone paleo where veggies, tubers, fruits, greens, and other food stuffs are encouraged and common.
If you are eating 50-200g of protein a day, I wouldn't even begin to give this a second thought.
"sometimes cheese"? That's bad, and it's not Paleo. Cheese can definitely contribute to your IBS.
I recommend going starting on the Specific Carbohydrate Diet (SCD); read the book by Elaine Gottschall to learn more. Basically it's a low carb form of the Paleo diet. It has helped me tremendously in conquering my IBS. Yeah, going low carb is no fun. But it's essential for IBS sufferers, at least for some period of time.
i routinely eat 150-200g of protein a day, not by choice really but because it tastes soo good, feels right in my system, and is probably making up for my decade as a vegetarian. I eat plenty of fat (much of it in the meat) and veggies (esp greens) so i have no digestion issues. I don't have IBS, but keep an eye on that.
I'm also beginning to have a 'veggies only' day once/week because somehow i think i should (!) I love veggies, so that won't be a problem. (F, 5/8", 128#, 19% body fat, 58 years old)
There's no reason to worry about eating protein as long as you aren't restricting fats. It is highly unlikely that you would be able to eat so much that it would be detrimental to your health.
If you're worried about the old myths about osteoporosis or kidney damage, rest assured that they're just myths.
Higher protein is protective against osteoporosis and fractures. High protein also lowers blood pressure and risk of diabetes, which are the two main risk factors for kidney failure.
Protein and bones: http://www.ncbi.nlm.nih.gov/pubmed/21102327
Protein and kidneys: http://www.nutritionandmetabolism.com/content/2/1/25
Basically, high protein is good for you... not the other way around.