This is a fun one because it's a good example of how to bend the truth with the truth. About 80 to 90 percent of people who have lung cancer were smokers. Onl

This is a fun one because it's a good example of how to bend the truth with the truth. About 80 to 90 percent of people who have lung cancer were smokers. Only about 10 to 15 percent of smokers will develop lung cancer. So it's not a guarantee. It increases the risk. Just like alcohol (https://www.cancer.gov/about-cancer/causes-prevention/risk/alcohol/alcohol-fact-sheet https://www.cancer.gov/about-cancer/causes-prevention/risk/a...) The problem with doing RCT with alcohol and with smoking is that we're talking about lifestyle studies. You can't really do a study with the goal being "see if we can give this dude cancer during his lifetime". And let's also remember that the study that people who drink moderately had longer lifespans just really notes correlation. It does not prove a causation. Drinking is ubiquitous. Most people drink. Drinking is also a luxury. So if you're poor, you either drink a lot or very little. Because you either have a problem or you're too broke to afford it. (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3185179/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3185179/) Guess which income bracket engages in moderate drinking the most? That's right, the income bracket that also allows you to afford better health outcomes overall. So while it may be true that moderate drinking correlates with longer lifespans, it's a knock-on effect to the fact that being poor sucks.