I was diagnosed following a biopsy in 2010 and have had the problem of a racing heart and occasionally palpitations after eating, for serveral years before. I also suffer from chronic insomnia, where I wake in the middle of the night with a racing heart and in a state of anxiety. I know this is because of what I've eaten rather than having any mental/anxiety issues that concern me. My consultant and GP both say it's one of the unexplained symptoms of PBC and my GP has recently prescibed sleeping pills. I'd be really interested to hear if other PBC sufferers have this problem.