Dharma
If your intent is to show that we are dealing with drastically more diet-related health problems now than ever before in human history, trust me, you are preaching to the choir. I'm kind of a low-end health nut. I know our current diets are shittier than ever, but unless you can somehow prove that there absolutely was no such thing as a shitty diet at all before certain chemicals and processing concerns entered the market, or that there were zero diet-related health problems before the 1900's (or whatever other arbitrary, agenda-driven point in time you choose)..........then the whole pursuit becomes pointless. It becomes a subjective witch hunt, because at the end of the day, if you outlaw donuts for sugar content you'll also logically have to outlaw grapes straight off the vine.