Jon, Jon .. as you well know, this is just a game played by those who know that no ethics c'tee would ever approve an RCT which would satisfy your evidence. So just keep repeating it, eh? simonchapman6.com/2023/01/20/v...
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Simon, here is the latest data on US youth past 30 day cigarette smoking and nicotine vaping. Look at that increase in smoking following the big increase in nicotine vaping 2018-19...oh wait, youth smoking rates just continued to fall to historic lows (0.4% of 12 graders now daily cig smokers).
aug 22, 2025, 2:52 pm • 1 0 • view
Same thing happening here simonchapman6.com/2024/10/15/t...
aug 22, 2025, 10:37 pm • 0 0 • view
...and kids who smoke cigarettes are more likely to vape, and kids why smoke MJ are more likely to do both etc etc. But the evidence that any of these are causal is very weak. The ABCD study is showing us its probably not causal at all. The kids who later used substances were different at age 10.
aug 21, 2025, 1:38 am • 2 0 • view