One other item I believe keeps us off prescription drugs is low salt diet.

Glad to hear I will be making comments to you for some time. One of my enjoyments.

So did I. It turns out I'm overdue for a colonoscopy.

Yay................

I too had no meds on prescription until I turned 76. Then I was put on a meds for my blood pressure. 2 years later my "vet" added an anti-cholesterol med and an anti-coagulant med as a precaution, because a carotid artery is constricted. However, my blood pressure frequently drops below 100 (it's been down to 64/47) so I halve the pressure med until it recovers.
I love full cream milk, butter, and red meat but I eat them in moderation, along with fresh vegetables and fruit. Hence, I weigh 150 lbs and stand 5' 8".
BUT, MANY PEOPLE HAVE DIFFERENT METABOLISMS, SO WE ARE BASICALLY LUCKY. (Despite having slow acting cancer in my immune system.)

I suspect that a lot of people are on medications, mainly because they have been taken by a marketing ploy, or because they are still taking something that they once needed but never stopped.

Several thing, and let me first say that you are to be congratulated on your healthy lifestyle and having lost that weight at that age, since it's harder I think the older you get: until you get sick like my dad did when he turned 80 and went from a five foot ten 250 pound guy to a bent over 5'9" guy who barely cleared 170lbs. I have hereditary high cholesterol. At it's highest was just under 700. The only time it has been under 200 was when I was on the Atkin's Diet for a couple of years, eating all those things you think cause high cholesterol and avoiding carbs. I had a total heart block at 57, having nothing to do with my cholesterol. It's an electrical problem between the two sections of the heart. I had my first pacemaker that year at 57. ion 2018 I had a V-fib that almost killed me, again an electrical problem and received my defibrillator pacemaker. I did have a few partially blocked arteries, but considering my cholesterol had been higher than 422 since I was in my 20's, I figure that wasn't too bad. I am probably about 30lbs overweight, haven't really exercised most of my life, had a sedentary job and sedentary hobbies for the largest part of my life, but doing well besides the heart issues.
My sister was, like you, a exerciser, organic eater, never had high cholesterol that I know of, never had any heart problems, didn't smoke (I did for maybe a third of my life, but quit years ago) and is now dying of metastatic breast cancer. I believe genetics (there is no history of cancer in our immediate family) and luck can play just as important a part in longevity as lifestyle. If you are predisposed genetically various health issues you can aggravate them by lifestyle, but that by eating and enjoying will not necessarily do you in if you have a healthy constitution. Like so much in life, it's a roll of the genetic dice, mixed with some environmental causations. Extremes of healthy living or unhealthy living, or anything else really, can certainly throw a stick in the spokes, but not be the deciding factor. Up until my V-fib in 2018, I took one high blood pressure pill, and that was just to keep it under control enough to pass my CDL physical. Now I take three, BP, Statin and blood thinner.
I will be 70 in January, legs are in great shape, don't have any real pain issues, rarely even take any kind of pain killer, rarely get sick, hardly missed a day of work when I was working.

Keep it up