Don't be a germaphobe. Don't wash your hands a lot. Give your immune system a little work out each day by not babying it.
Try not to take any medicines unless you absolutely need them, and stay away from hand sanitizers. If you do need to clean anything, soap is more than enough and water is usually enough.
I thought it was normal to be over 50 and not take any medicines, but all the doctors and staff were surprised by this when I got my colonoscopy recently.
Some yes, and then all sorts of mood boosters, painkillers, etc. Basically all the stuff I later saw during a commercial break at a bar during some sports game. (this should be banned, TBH)
By hand sanitizers, do you mean something other than the isopropyl-gel based hand sanitizers? If not, I would have guessed that would be little different than using a strong soap.
That said, unfortunately there's some element of luck to it. There's compelling evidence that C-section babies have abnormal immune responses and less diverse body flora. And I imagine childhood circumstance affects things too, city vs country affecting the childhood exposure to pathogens and non-pathogens for training.
Try not to take any medicines unless you absolutely need them, and stay away from hand sanitizers. If you do need to clean anything, soap is more than enough and water is usually enough.
I thought it was normal to be over 50 and not take any medicines, but all the doctors and staff were surprised by this when I got my colonoscopy recently.