I'm going to change my answer about beef! Originally I said grass fed beef didn't seem to be a problem. Now, I'm not so sure. It appears that beef is an issue for me. Of late I've been filling out a food journal. I write down nearly everything I eat. And with that will write notes on the side on how I feel at the time. I've tested beef a few times now, testing in this case is where I'll be sure to eat a meal or two with beef in it. I've found a consistent result from this. For the first few days on the beef diet I'm fine. And then after a few days of eating this way will develop an ear ache, slight sore throat, will sometimes bleed from the skin around my finger nails oddly, become sluggish and tired, and by around the 8th day develop a severe upset stomach. I'm surprised, as I've considered beef a fairly safe food of late. I've tested beef a couple times now with the same result.
I guess I shouldn't be terribly surprised if beef is a problem food for me. I've know since I was a teenager that cows milk caused problems. Drinking milk, even a small amount, will cause me discomfort. Milk makes me feel overly cold and even turn blueish in color, with a feeling of sluggishness/tired, and confusion for a day. Fermented cheese doesn't seem to be as much of a problem, but have known that cheese makes me feel run down.
So in the end maybe I wasn't made to consume or be around cows. With that said, even with the beef testing results, I'm still questioning this. Might have to test it again some times in the future to make for sure. Going to give my body a break though.
Life would be easier if I had been born with an instruction booklet!