Hello Sheila, i apologize for the late reply, and i am so sorry to hear you have such problems with food, i know exactly how you feel and being scared of eating is not a fun place. It seems that you "faint" on top of having heart palpitations + indigestion, which is something i have never experienced, gosh it must feel awful. I wonder what makes you lose consciousness, does your heart gets really fast before you faint ? Have you heard of someone else with these violent symptoms ? What keeps my spirits high is that my new diet forces me to be healthier, and keeps me away from junk food. And if my friends drag me out at night i bring my own dinner at the restaurant in a small plastic container, if you talk to the manager usually they don't mind at all. If i crave something that might trigger a reaction, like jam, chocolate or wine, i make sure i have just a tiny amount of it AT THE END of my meal, but NEVER on an empty stomach. So i mostly eat fresh vegetables, raw or lightly cooked, with a little butter or evoo, pasta or rice, chicken or beef, fresh fruits, milk, bread and yogurt. But i also make sure my diet isn't too perfect in order to become less sensitive, so everyday i eat a tea spoon of something old or processed, like cheddar cheese, sauerkraut or ham, but always after a few bites of fresh veggies+carbs+proteins first. Basically i avoid to eat a dish i haven't cooked myself because even if a dish looks fresh ( sauteed spinach for instance) who knows what was added at the end ( lots of olive oil that was sitting on a shelf for 2 years for example). The hardest part for me is traveling, so i try to stay in a place that has a small stove so i can cook up a little something. It is not easy, but it could be so much worse, like diabetes or Crohn's disease for instance. My thyroid is also borderline, and my serotonin slightly low, so your that's interesting, definitely a good lead. Have you had your adrenals checked ? (it's a 24h urine test ). What does DHR mean ?
All the best
Sophie