Smoking lowers the risk of developing ulcerative colitis and can suppress its symptoms. There's a lot of anecdotal stories on Reddit of people quitting smoking and getting an UC flare.
There's a lot of anti-vaping FUD in the Oz media right now. Anecdotally a lot of people I speak with view it as more harmful than smoking. And legislation has made it extremely unpleasant and inconvenient to obtain low-nic vapes that don't taste like ass.
Fortunately every second convenience store sells high-nic illegal vapes under the counter, with $deity knows what chemicals inside. Yay?
Yeah but the transition is rough. For example when we have autonomous vehicles what are all those drivers going to do. You might saw "tough luck" but we are a society not just an economy.
If you're looking for the who, Rhonda Patrick points the finger at rampant corruption in nutrition research and public policy. For example the American Heart Association being sponsored by Cheetos.
In between the SV hivemind posts is distributed just enough nuggets of mindblowing technical, business and even medical wisdom (from insanely switched-on people) that it keeps me checking. It's the ultimate infovore loot box.