For the past few days, I have been eating fat from organic pasture raised 
beef that was finished on barley and rice. Suddenly, I have had stomach 
cramps, tiredness/yawning, moodiness, and a skin breakout like I havn't had 
in ages. Everything else in my diet is exactly the same. Usually the fat I 
get is 100% grassfed and I am always OK with that. The last time I had fat 
from an animal that was fed grain was goose, and it also did not feel good 
to me. I have heard that "toxins" are stored in fat. Does this happen to 
anyone else that is very sensitive to gluten and has eaten fat from an 
animal that has been fed such grains? I wonder if there are gluten proteins 
in the fat of the animal. I am going to stop eating it for a few weeks and 
then give it a try again later and see what happens.  Always amazed at how I 
do the slightest thing different and something goes out of whack.