Funny how people can go without eating anything at all for weeks at a time and drinking only distilled water but have no electrolyte problems whatsoever. You have been eating over the last few months while drinking the distilled water I assume so somehow your distilled water is leaching a lot more electrolytes from your body than it is from the faster's bodies. It has to leach the electrolytes stored by your body and those ingested by you too, whereas those fasting have none of these problems. There is something wrong with this equation I'm thinking. If I were you I would look a bit further for the cause of your hair problem because blaming it on pure water doesn't really cut it. There is nothing in the distilled water, not even electrolyte eating gremlins, so if I will drink pure water ahead of whatever they would usually feed their rats on before slaughtering them any day.
And if the World Health Organisation is so great, how come the World's health isn't?