Hair Falling Out All The Time

My hai is really thick (or I have lots of it ... Don't know which) and it is constantly falling out and goes everywhere, even though I've got no bald patches. It has been the same my whole life - my mother's is the same too Does anyone know of a way to reduce this? I'm getting sick of constantly having to clean it up, the arm tickle, funding it hanging from my dogs mouth etc. And it really annoys my fiancé. I very rarely blow dry my hair, I never straighten or curl it and it hasn't been died in over 10 years. It's not breakage because the hair almost always still has the root on it. And last time I had a blood test everything came back normal. I really do hope someone has a solution to reduce just how much it falls out! With how much hair I lose a day I'm really surprised I've not gone bald over the years 😂