So I recovered, lived about 2 months of normal health feeling great again until suddenly, one day I began feeling very
light headed. Not an unpleasant feeling, but I felt drained of energy, had to sleep all the time, needed loads of food and drink. I had a blood test - again nothing at all wrong. Doctor told me to go away and 'plod on'... I can't really work like this, I'm doing a PhD in neuroscience, I have to handle pretty toxic stuff sometimes, which could get dangerous.