The cuticle of your fingernail is the whitish crescent at the base of the nail - the region where the nail is formed. I cannot think of any reason why water would turn this, or your fingers black. There are medical conditions, including simple bruising, that could do so.
Only Nelson Mandela can answer this question definitively. However it seems unlikely that, given his life of sacrafice and fighting for black causes, he would reverse his course now.
To turn green black, add black.
Low pressure, wear (usually after about 100 gallons) or a defective tip (rare).
capillaries run into your fingers some end there but some turn around and go back down
Rusting
Mold
The cuticle of your fingernail is the whitish crescent at the base of the nail - the region where the nail is formed. I cannot think of any reason why water would turn this, or your fingers black. There are medical conditions, including simple bruising, that could do so.
Gravitation.
Brake dust!
Bugs are wiping their asses on them
what diseases causes stubbed fingers, protruding upper jaw
when you crack your fingers, your fingers can't bend when you're older.
when you crack your fingers, your fingers can't bend when you're older.
They shouldn't. Go to your GP and get it checked out! if you have been doing heavy building work that causes a lot of strain to your hands - that is probably the reason why your fingers are hurting.
Alkaptonuria is an inherited condition that causes urine to turn black when exposed to air.
Too much iron in the water