Answer:
Sometimes I am white, sometimes I am dark. Most people love me. What am I?
The more you have me, the less you see. Shine a light on me and I flee. What am I?
I am easy to waste and unstoppable. What am I?
They took me from my mother's side where I was bravely bred and when to age I did become they did cut off my head. They gave to me some diet drink that often made me mad but it made peace between two kings and made two lovers glad.
Men seize me from my home tear apart my flesh drink the sweet blood then cast my skin aside.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?