You beat me to it. You can go through the list of things that harm and benefit parasites and it perfectly correlates with things that the government actively combats and promotes. For example, smoking harms parasites and there is a national anti-smoking campaign. Parasites thrive on fructose and oddly enough corn production gets subsidized (under the guise of ethanol production) and soft drink manufactures and other processed foods move to replace sugar with corn syrup.