It's the same with your finger nails. The white specks of color mean you need more calcium. It's an easy fix. Take calcium vitamens. There is also a calcium nail polish that avon sells. Your meds you are on can be part of the problem, but it's not that big of a deal. Just crummy looking. Good Luck.
I have this same issue and it really bothers me. I am going to try a regimen of calcium and vitamin D supplements for about 90 days and see if I notice an improvement. Thanks.