Is it normal that when i stand up my eyes go black?
By black I don't mean they look black, I mean the feeling you get before you pass out I guess. This has been going on for about a year or so. There have been 2 of times where Ive fallen over from this. Usually I can just hold onto a wall or I won't need support.I'm an 18 year old female. Ive lost a lot of weight this year (from diet and exercise) which is the only thing I could think might have caused this, but I had this before I started losing it..so I don't think that's it.