My White Hair is Thinner Than the Dark Hair

Dear Dr Rassman, I am 55 years old with a reasonably good head of hair. I started propecia and rogaine 10 years ago and am happy with the results.

The hair at my crown/vertex area is a little bit thinner but nothing too bad. Here is my question as I have gotten older my hair has gone from brown to gray and is now turning white in some places. It seems as if the white hair is slightly thinner then the darker hair. does this happen?

If it is translucent white it can appear thinner, but I have not personally measured the white and black hairs with a caliper to compare. I can’t really tell you why it might happen, though it is probably just genetics.