Can you have alzheimer's disease when you are in your early 30's?

my grandfather died of alzheimers disease. i can't remember what i am watching on t.v when it goes to commercial. if i'm driving i will forget where i am going. if i am talking on the phone and put someone on hold, i won't remember who i was talking to. it's getting harder and harder to carry on... show more my grandfather died of alzheimers disease. i can't remember what i am watching on t.v when it goes to commercial. if i'm driving i will forget where i am going. if i am talking on the phone and put someone on hold, i won't remember who i was talking to. it's getting harder and harder to carry on simple conversations. i know what i want to say but it doesn't come out. i sometimes forget how to spell simple words, etc. is it possible to get alzheimer's disease at my age or what could it be? i'm 30 years old. thanks

it started about 2 years ago and is getting worse.
Update: i get 12-13 hours of sleep a night.
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