I'm 72. I take care of myself but I don't worry about my health at all. I've had two episodes of cancer ( ovary and breast) and in both cases I trusted my doctors and was fortunate to come through with a good recovery and no relapse.
I do all the right things with diet and exercise, get all the screening tests that are available, and I test my BP and blood sugar once a month with my home equipment -- diabetes is in my family so I like to keep a check on it.
Life is too short to be stressing about every little thing - my advice is to enjoy every day that is given to us. Take reasonable care, but otherwise put your health status on the back burner of life .
Book Title by Their Authors (Parlour Game)
Churchill to be axed from British banknotes in the name of diversity.

