[Just another Joe]

While there were no genuine randomized smoking experiments on humans, there were thousands such experiments on animals but you will never hear about these findings since they all went the "wrong way" -- smoking animals get fewer cancers and live ~20% longer than non-smoking animals, while staying thinner (by 15%) and sharper into the old age.

Sonds like the study done by the World Health Organization that you won't find bandied about by any anti-smoker, even though it's the largest study on smoking ever done.

I'll give you one guess on that outcome.

[nightlight7]

I'll give you one guess on that outcome.

The results were so bad, they even removed the news stories which initially reported on it (such as the U.K. Telegraph story below).

Passive smoking doesn't cause cancer - official
By Victoria Macdonald, Health Correspondent (U.K. Telegraph)

THE world's leading health organization has withheld from publication a study which shows that not only might there be no link between passive smoking and lung cancer but that it could even have a protective effect.

The astounding results are set to throw wide open the debate on passive smoking health risks. The World Health Organisation, which commissioned the 12-centre, seven-country European study has failed to make the findings public, and has instead produced only a summary of the results in an internal report.
...