A good friend of mine who'll be 50 in Sept. had a really hard time eating any fat without it upsetting her tummy so had gradually shifted to an extremely low-fat diet. She then went on a 2 week road trip with her DH around the southwest, which of course involved a lot of meals out, and she was miserable enough in the gut to see her doc upon her returned. Turned out it was her gallbladder. It was inflamed and full of stones. She just had surgery to have it removed. In the few weeks prior to her surgery she could tolerate almost zero fat.

I don't have much problem eating fat in moderation, luckily. Love my olive oil and cheese and thankfully am still able to enjoy it.