Sadly it is normal to experience some hair loss as we age, but it's always worth having a blood test at your GP to make sure that iron deficiency or thyroid problems aren't to blame.
I'm lucky enough to have an older hairdresser who is most sympathetic. She recommends a short haircut if you can get away with it, shampoo no more than twice weekly, and avoid after-shampoo conditioners which she believes suffocate the scalp. She told me to use argan oil liberally on my damp hair instead.
I am also taking vitamin B complex and cod liver oil.
I must say I see a huge improvement in thickness and condition of my hair, and my itchy scalp is cured.
I don't know if this will work for everyone, but harmless and worth a try! 