I had FICO 1b endometrial adeno with "extensive LVSI' which meant they were concerned about spread through the lymoh nodes, which often goes to the lungs. So, total hysterectomy then radiation. Now I have a recurrence in the vagina which could have been caught earlier if the person doing my checkups had looked more thoroughly. But still I'd say check-ups are a really important part of prevention, and that can mean using the dilators or whatever to keep the vagina a good size.
And I've lost a lot of weight deliberately, and got fitter than I've even been and only eat sugar in emotional emergencies!