I’ve found a simple rule of thumb that works for me:

Nature has a way of limiting how much of a certain substance you can consume. By simply eating less processed foods, you’re eating more in line with what the human body expects historically.

Take oils for example. It requires immense pressure and processing, only available in the Industrial Age, to produce the quantitates of certain oils. We consume way more oil than ever expected. Sugar is in the same boat. Ground wheat is kinda too…

The more processing the worse it is for you, as a general rule of thumb. So yea, eat Whole Foods when you can!