Are sweaty hands and dirty fingernails related?

I do believe that sweat from hands can cause 'dirty finger nails', especially when there is no other apparent reason for this to happen. Some people sweat more from their hands than others. I'm one of those people with sweaty hands. No matter how often I wash my hands and scrub my nails and not pick up anything 'dirty' ... if my hands are sweating I will soon begin to see dark 'debris' under my nails.

I'm surprised that no one in medical or Cosmetology fields has made the connection. Sweat > moisture will naturally draw in dry particles from the air or from anything we touch.