Gum Disease. Dentures or implants

I am a 44 year old woman who went to the Dentist this week for a tooth out (tooth was hanging out) I was told I have advice Gum Disease. My Dentist as advised me to have my remainder teeth out and have Dentures fitted.

I havent slept for the last few night thinking about what to do.
Does anyone know if I can have implants fitted instead or is this a No cause of the Gum Disease? Can I have them fitted straight away as don't fancy going tooth less.

If not whats the best Dentures to get? Dentures do worry me as I do Karate and cant wear my Gum shield as this makes me wrench when its in. So cant see me managing with Dentures.

Thank You.