Aw, no fun here trying to scare people
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I'd just recommend actually knowing the farms stuff comes from. Some farms and just companies overall (Monsanto should die in a fire for how cruel it is to employees and people) and not buy bad crap, you should be fine.
I wonder where the source of the problem is. Did you know that there is a Sugar Quota Act, that was put into law by lobbying from the corn industry, and in particular the manufacturers of High Fructose Corn Syrup?
I honestly, truly, sincerely believe that these things would be less of problems without government regulation or central planning in any way shape or form.
It would force people to think, and I guarantee there would be more people like you then, rather than relying on the false sense of protection the FDA gives, and of course there would be the people like Moon who simply don't care, more power to them.