One of the favorite quotes of my MD is this, "an apple a day keeps the doctor away." There's a little more to it than just that, but that makes a nice sound byte. He's a regular MD, but in many cases this is still the best strategy. Avoid having to go to the doctor. My MD is ready with evidence based scientific treatments if need be, but lifestyle is usually the first choice. Then there's then whole question of the cost of medicine. Another incentive to err on the side of less medially intense solutions. Not everyone is so fortunate as some do need more intense medicine, but ideally it's a good thing to try and avoid.
I tend to avoid non scientific alternative medicine. It still has the downside of cost.