So studies on the dangers of cigarette smoking were intentionally screwed up to convince us all of something else? You'll need to explain that further.
Thats not quite what I said. Assuming you are attemting to ask what I think you intended then yes. The increases in lung cancer travelled around the world to the same countries at the same time that Marlboro replaced that countries most popular brand. Recipe adjustments allowed process changes not used by other manufacturers that concentrated nitrosamines to 21 times the normal levels.
Or attempting, anyway...