If anything else, please remember this when someone says "The science is settled". Unambiguous settled science usually means someone wants to convince you do something you don't want to do, and they've done more research than you.That's the punch line. The post - Smoking is Good For You - takes you on a trip through what you think you know. Probably, you know wrong. For sure the scientists know wrong.
Remember, the Scientific Method isn't replacing a Falsehood with a Truth. It's replacing a Falsehood with a more subtle Falsehood.