Look for locally grown organic food which is on sale. Sometimes organic is the same(or lower) price than non-organic. The absence of pesticides and the benefit to the environment are the real positives. Also, organic food sometimes tastes better...IMO. But yes...avoid those Chinese veggies.
Stay close to the Produce and Bulk Foods departments at the grocery store...get lots of low-impact exercise and plenty of rest...for optimal health. Of course...genetics, accidents, and luck...often override our best efforts and intentions. And DON'T SMOKE!!!