There are also a ton of "studies" funded by various industry groups. In a lot of cases you don't even have to prove that your product is healthy, you just have

There are also a ton of "studies" funded by various industry groups. In a lot of cases you don't even have to prove that your product is healthy, you just have to cast doubt on any previous research that says it isn't. Sow a bit of confusion and people just throw up their hands and eat what they want. It's a tactic the tobacco industry used to fend off attacks for decades.