When it comes to the precise details, I imagine there aren't many people who know for sure how the convoluted machinations of money and policy played out on a p

When it comes to the precise details, I imagine there aren't many people who know for sure how the convoluted machinations of money and policy played out on a particular issue. It's the nature of the game to keep it as opaque as possible. If we find out, it's usually many years down the road and it's rarely as direct as "grain outbid eggs". There are behemoth consumer food manufacturers involved, pharmaceutical companies too (statin drugs are a cash cow). Lots of industries profit or lose based on public health decisions and perceptions. Every once in a while it's pretty direct though, maybe the most well publicized example in recent years: https://www.npr.org/sections/thetwo-way/2016/09/13/493739074/50-years-ago-sugar-industry-quietly-paid-scientists-to-point-blame-at-fat https://www.npr.org/sections/thetwo-way/2016/09/13/493739074...