The author is in his 70s:
The buck comes between the doctors and the patients. They provide synthetics because they are cheaper and make more money for the docs. The common cold has been a fine source of income for the medicine man for many years and he isn't about to let lose of it. Far too much of this "scientific" materialis subdued or covered by convention or the dollar sign so much of it can be taken with that proverbial grain of salt.
The messing up of our ecology by so called scientific men has also done much to dull the publics faith in scientific endevor. Ponder the friction between the various factions about the danger of weedacides and pestacides and the pollution of our land water and air. Here again the "buck" makes more decisions than good sense. Any poison that will kill insects and other so called pests will also be detrimental to man. How can all of these men who call themselves scientists view all of this pollution and not say it is bad. The more I see of people who have been abused by the bad decisions of the AMA and FDA the less respect I have for them.