What do white spots on my nails mean and how can i fix them? they are a very common problem for me.

Calcium: Likely these spots are under the nail and are calcium deposits. See your doctor to check your calcium and PTH levels. They will likely be normal and this may just be something normal for you. Unless your levels if calcium are high there isn't much that can be done.

White Spots on Nails: One of the most common causes for these little white spots, which can show up on both fingernails and toenails, is a condition called leukonychia. Don't get alarmed as the name sounds serious, the condition typically is not. And while many people think they're caused by a calcium or zinc deficiency, that's generally not the case. Most of the time it's trauma and sometimes it can be allergic rxns.