Stick to the standard diet advice[1], ignore articles like these, and get on with your life.

[1] "Eat Food. Mostly plants. Not too much." Google it if you need more context.

Strive for as much non-processed food as you can, use glass or stainless steel for food storage as much as possible.

After thinking on this for a while and considering what food is constituted of, one of the only solutions that springs to mind would be to break it all down into nanoparticles. That way you only have to worry about it being filled with picoparticles.