I've been told that I need to have an aortic valve replacement in the next couple of months. I am a 50year old woman, other than the valve I am healthy. Surgeon and consultant have recommended a mechanical valve - because of my age and the expected life span of an organic replacement valve. However, I keep reading about all the sypmtons (eg weight gain, hair loss, generally feeling unwell, sickness, light headed etc) caused by Warfarin, which I will have to take for the rest of my life with mechanical valve option. I appreciate that everyone is different in the way they re-act to medication, are there any stats or info anywhere to give info on people taking warfarin to help me make a decision? I'd rather have ten good years on an organic valve then ten miserable ones on warfarin!