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The uncertainty of science: New more carefully done research now proves that secondhand smoke from smoking does almost nothing to increase the risk of heart disease.
In the early 2000s, as jurisdictions across the country fought over expanding smoking bans to bars and restaurants, anti-smoking advocates seized on the Helena study and related research showing that secondhand smoke exposure can affect coronary functions to promote fear of secondhand smoke. Groups across the country stated that “even half an hour of secondhand smoke exposure causes heart damage similar to that of habitual smokers.” Not to be outdone, the Association for Nonsmokers in Minnesota wrote in a press release that just 30 seconds of exposure could “make coronary artery function of non-smokers indistinguishable from smokers.” The message to nonsmokers was clear: The briefest exposure to secondhand smoke can kill you.
A decade later, comprehensive smoking bans have proliferated globally. And now that the evidence has had time to accumulate, it’s also become clear that the extravagant promises made by anti-smoking groups—that implementing bans would bring about extraordinary improvements in cardiac health—never materialized. Newer, better studies with much larger sample sizes have found little to no correlation between smoking bans and short-term incidence of heart attacks, and certainly nothing remotely close to the 60 percent reduction that was claimed in Helena. The updated science debunks the alarmist fantasies that were used to sell smoking bans to the public, allowing for a more sober analysis suggesting that current restrictions on smoking are extreme from a risk-reduction standpoint.
As almost always happens, the people pushing for the ban really weren’t that interested in protecting people’s health. They might have thought so, but in reality what they were really interested in was exerting their power over others, banning smoking and telling everyone else how to live their lives.
Read the whole article. It is very damning, and illustrates again why it is very important to not pass laws quickly based on some preliminary scientific results. Care must be taken, and patience is required. The science is never clear right from the beginning, especially on complex issues like climate and the health effects involving large numbers of people.