The amount and color of hair is way to high of concern to way too many people (says the guy that is loosing his gray hair at a pretty fast pace).
I had a bald guy with a very gray beard tell me that being bald was a sign of having a perfect head that shouldn't be hidden, and gray hair was a sign of wisdom.
I believe the gray hair is caused by children, I've never seen anyone that had (or were near) children that their hair didn't start turning gray soon after. Loosing hair is caused by being married (or trying to be). Some say both traits are natural, but I don't believe them.
Oh yea, the transmission... Change the filter, the fluid, and adjust the bands. My transmission (RE46) with only 44K miles on it had a pretty clean pan, but the filter was getting dirty already and the magnet had a little fuzz on it. I changed both about 1,000 miles after the cooler line failure transmission flush. I added a trans pan drain plug at that time as well.