I am a 35 year old woman, and I come to you with a quite embarrassing problem. I seem to be losing my gums! I have never heard of anything like this happening, and I suppose it has been going on for quite some time. Every year they are just a little bit further back, exposing more of my teeth. I first hardly noticed it, around 10 years ago, but in the past 5 years it has been really obvious. Why is this happening? What can I do to stop it?