When I was first out of the hospital and was monitored by home-health nurses, my INR was too low, too low, too low. Then I got to my own home and cooked for myself and the INR shot up to 7.2. The doctor (at whose office it was tested) had me immediately re-tested. Still SO high. I had NO headache, however, though that would have been a bad co-symptom (as in possible stroke) I am sure. I was taken off Coumadin for a couple of days and tried to get the level down through food (I seem to very susceptible to greens in my diet) and my INR came down. Ross always says to eat all of the greens you want, but I find that too many greens immediately drives my INR low. Conversely, raising my anticoagulant dosage will make the level shoot up. I try to live a standardized life, food and coagulation-wise. However, 7.2 is way too high!