Hello, wonder if you can shed any light on my troublesome symptoms? I'm 50, 6ft, male, a little overweight but still fairly fit, don't smoke, and drink maybe once a week. One day, as I was walking down the street I started to feel disconnected, fuzzy-headed, light-headed, fatigued, and a very heavy feeling in the legs. For around 6-8 months now it's been the same, some days not as bad as others... sometimes with shortness of breath as well. I've had blood tests, ECGs, a brain scan, Exercise ECG, Echocardiograph, Stress Echo, Holter Monitor and a Coronary Angiogram. Apart from a B12 deficiency which is now okay due to injections, and a few very minor (and unconnected) heart ailments, nothing has been shown to be the cause.