The cause of the obesity crisis
With Trump's attempt to appoint RFK to lead the Department of Health and Human Services, a lot of people are talking about how our foods and medicines are poisining us.
These days, the main food boogeyman seems to be seed oils. Yet if you try to figure out why people are so worked up, you'll find it's basically nonsense. Seed oils seem not particularly different than other oils, and there doesn't seem to be much reason to think they affect the human body differently. It reminds me of like 10-20 years ago when people were similarly worked up about corn syrup. Similarly, if you look into corn syrup, you'll find that it seems not particularly different than other sugars, and there doesn't seem to be much reason to think they affect the human body differently.
Now I love a good conspiracy, and I even believe in some myself, but nearly everything related to obesity seems to be conspiratorial thinking and motivated reasoning. People don't want to accept the most likely truth. And yet, Occam's Razor provides it for us:
People are eating more food, mostly because food is really cheap and delicious these days.