That is patently false. There is only one single risk factor for cancer generally that is bigger problem than smoking unprocessed tobacco - that is smoking processed tobacco. If you charted endemic cancer risk factors in order of risk, with smoking processed tobacco at the top, then smoking unprocessed/organic/raw tobacco would be about 5% away from the top. The next biggest risk factor would be obesity about halfway down the chart (close to smokeless tobacco products like dip, which has a higher specific risk for mouth cancers). Turns out lighting something on fire and inhaling the combusted free radicals is universally a terrible idea, who’d have thunk? Personally I’m amazed that this kind of misinformation still propagates, on Lemmy of all places, sixty years following the surgeon general’s warning.
The meme specified “perceived temperature”, which I would assume to mean some combination of the temperature metric with a heat index, humidex, wind data, solar radiation estimates, or something like that