Don't you mean, "how fast do your fingernails grow?"
no
drink more calcium
The white area in fingernails and hair are caused by air. That's why snow is white and not blue. Little bumps and bruises that are done to the bed of the nail cause these imperfections.
Stay in you lane.
You can improve your calcium. If you have short thick white line on your fingernails, then you have a lack of calcium. You can drink more milk or if you are lactose intolerant you can take calcium tablets. Or think back to see if you can remember hitting your finger on something may have caused this line it will go away eventually if this is the case but if it does not you may want to go get a blood test to check if you lack a certain mineral or vitamin.
no passing
the white star line, if you mean the ship.
Its not a lack of calcium. Its just simple Bruses on the nails
osteoporosis and the white tick lines on your fingernails !
This might be because you dont drink enough milk !
Means it's positive