Is it dangerous for a 26 months old to have grey hair?

I just found a piece of grey hair on my 26 months old daughter. She always eat a balanced diet of rice, fish or chicken, vegetables and fruit. Is it a sign of sickness or vitamin deficiency?Is it dangerous for a 26 months old to have grey hair?
i think it is just because of the lack of pigments in her hair. the color will come later on, if not go to the doctors. it is just like how many ppl are born w/ gray eyes but later on they turn into different colors. you have nothing to worry about :)Is it dangerous for a 26 months old to have grey hair?
if your going to seek any professional advice like a doctor.. i would also talk to a naturopath as well sometimes they can give you answers that doctors cant.... I think we all turn grey at some point and it doesnt matter about the vitamins so perhaps your child is not unhealthy, maybe its just a pigment hair.. is she blonde?, im sure its nothing to worry about... i think i personally would worry if more started to appear rather than one hair.......... kind regards, mother of 3.
Are you sure its her gray hair and not someone else's that has been around her. Or it could just be string thats gray.