I have PV diagnosed nearly 7 years ago, treated with Hydrea and venesection, plus low-dose aspirin. I was diagnosed late last year with reflux (stomach to oesophagus) and since then have modified my diet: no meat, plenty of fruit and vegetables, use olive oil, eat fish, oily by preference, not too much carbs espec. sugar, and I don't eat an evening meal, just a light teatime snack. What a difference! Lost the breathlessness and blood measures stable including hematocrit 40-41% and no need for venesection, my hematologist says my treatment is working. And now I can take more exercise without feeling tired. Remarkable!