There's probably a more direct correlation in the price and use of HFCS (high fructose corn syrup), especially with giant portion sizes as Americans shift toward cheap foods under inflationary economics (hard to correlate with the FDA and USDA avoiding reality and each other so intensely).
Simple concept: what do bears eat to get fat? Fructose (berries).
HFCS is like gasoline to the liver. Throw in a dose of inflammation from the 'natural' bug poison of GMOs and the 2,4 -D in small grains, not to forget glyphosate, and a general lack of clean water without microplastics, all keyed up with various electromagnetic signals, outgassing from plastics in homes and cars, and the perpetual stress of a society based on competitive Stupid.