I started paleo three month ago and until now i haven't had any problems. Before around a week Ii started having stomach ache an hour after eating breakfast (eggs and meat). Ii decided to stop eating breakfast and there was no pain but the pain came after lunch (today - chicken livers and lettuce salad), I also feel very tired and letargic. I bought probiotics but until now - no change. I am thinking maybe I have trouble digesting fat. Any ideas?
Pete's advice about fiber has some validity but more because your body needs to adjust to a change in fiber intake than because there's any essential requirement for fiber. That's one of the myths of mainstream nutrition, I'm afraid. No one ever died because they didn't eat indigestible cellulose. There are some pretty good arguments that the increased cell turnover caused by fiber moving through the colon leads to cancer, however. In any case, if you were having issues because of fiber you'd be feeling it a bit lower down than your stomach.
Ketosis can cause different symptoms in different people but we have no way of knowing whether you are in ketosis. From your two meals you posted here, possibly you are. Ketostix are cheap at the pharmacy. I got some at CVS for just over ten bucks. Personally I don't get stomach symptoms when I go into ketosis but that's me. You might, though.
Check and make sure it really is your stomach hurting. Were you eating low-fat before this? If you were, could you possibly be having gallbladder issues? If someone goes long enough on a low-fat diet, their gallbladder doesn't get much of a workout and it can collect bile salts until they crystallize. Then you start eating fat on a low-carb or Paleo regimen and all of a sudden, OW.
Quick check if you don't have much money for a doc--Get some coconut oil and take a tablespoon of it and wait to see if there are symptoms. Or drink some coconut milk. If your stomach hurts then it may be an enzyme issue. If it doesn't then yeah, get your gallbladder checked. Coconut oil is made up of medium-chain fatty acids that are easy to break down without gallbladder involvement. I know someone who's missing his gallbladder who can eat coconut fat with no problems whatsoever.
And here's the deal with enzymes: your enzyme production adjusts to what you are actually eating but it can take some time. I hear stories all the time about former vegetarians, for instance, who have trouble digesting meat at first. Some of them get discouraged and go back to vegetarianism but some persist and it does get better in time. I don't know if taking enzymes will delay your adjustment but if I were in your shoes I'd take them anyway just to see if they help--no one likes to be miserable.
Another thing that might help is eating more fermented foods. If you like Korean food and it's available locally, kimchi is a good one. You could also try sauerkraut, but make sure the only ingredients in the can or jar are cabbage and salt and water. Fermented foods carry their own digestive enzymes and may be a more reliable source than just popping a pill, since the pills vary widely in quality.
My sister and I discovered the HARD way that we have very different dietary requirements. She is thriving on a vegan diet, while I was very sick and became obese from it. She builds very lean muscles that turn to fat easily, and mine are more bulky and just sort of sit under the fat. When I went back to eating meat, she tried it with me and our symptoms reversed. I'm losing weight rapidly, but she gained. She became ill, had stomach issues like you've described and had terrible acne. My skin immediately glowed, but misdiagnosed celiac disease was messing complicated things, while she has an almost violent allergic reaction to animal flesh. I recently went paleo, and I haven't felt better. I think blood-type, built, and genetics have a lot to do with the right diet for us.
We're going on the old poem, "Jack Sprat could eat no fat, his wife could eat no lean." I guess what I'm suggesting is that you make sure your diet is right for your body.
It took me 6-8 weeks for my digestion to normalize once I went Paleo. Try the NOWfood Super Enzymes that Robb Wolf recommends. They helped me a lot. Eat a ton of green vegetables. You're missing a lot of fiber you used to get from grains, so make sure you eat a ton of vegetables.
Did you give up dairy? Every time I give up dairy I get serious acid problems. I guess I have a kind of bacteria called helicobacter pylori living in my stomach, which gets killed by the lactic acid in dairy, especially from yogurt which is cultured with lactic acid producing bacteria. Nowadays I kill the h. pylori by eating saurkraut, kim chee, and...uh...soy yogurt...but do me a favor and don't tell any of the paleo folks I do that last one, k? ;) Anyway, it's really easy to test yourself to see if the problem is h. pylori: next time you have an acid problem eat a bunch of yogurt or kefir, and if the acid goes down then you know it's h. pylori.
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