I used to be the picture of health too - even adopted a diet similar to yours. Then about 10 years ago (44 now) my doctor recommended a colonoscopy. I wasn't really surprised but after researching it I did not like the idea of the re-exam (and possible/probable re-scope) every 5 years. Just didn't sound like a 'tried and true' remedy.
What I'm geting at is chiropractic care fixed those problems and a whole lot more potential problems. I was convinced after one adjustment and a review of my spinal x-rays. If anyone doubts chiropractic care (probably b/c their doctor or some other 'expert' called them quacks) then just review AMA vs Welk.
I think society is too easily swayed on 'modern medicine' vs chiropractic the same way people viewed MSM vs the internet. One is much more effective at getting to the truth of the matter...
I am a firm believer in main stream medical science, but my girlfriend claims that acupuncture cured her of serious kidney disease when all other attempts at treatment failed. Perhaps remission simply came from cyptogenic causes, but I certainly keep an open mind. I have heard otherwise quite sane friends praise chiropractic maneuvering, and while some call this sort of thing quackery, I wouldn't hesitate to get a "treatment" if I had a disease that didn't respond to accepted medical procedures.