Ever wondered what those temporary white marks on your nails actually mean? You probably settled with 'oh, it's just a calcium deficiency'. Guess what, you're wrong!

Source: Disease Pictures

Turns out the truth has actually nothing to do with calcium deficiency.

Source: Giphy

According to SciShow, these milk spots are actually formed when the nail bed forms damaged cells after it experiences a knock or a bump. These little white spots usually move up and disappear after a point of time as the nail grows.

Source: Unilad

However, in some cases, their presence may indicate a fungal nail infection or even feverish illness. Also, if you have consistent, repetitive white lines running parallel to your nail bed on all your nails, it could be a case of lead poisoning.

Watch the video below:

Certainly not a sign of calcium deficiency!

Masthead image source: Newsbeat