rationalskepticism.org

E-cigarettes are so dangerous and addictive governments should consider banning vaping, cardiologists have warned.
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Public Health England (PHE) insists e-cigarettes are 95% less harmful than smoking.
But Prof Munzel and his colleagues said there is only a "paucity of evidence" to support claims e-cigarettes are a "healthy" alternative to smoking or that they help people quit.
The new study, published in the European Heart Journal, looked at the effect of e-cigarette vapour on blood flow and stiffness in the brachial artery in the upper arm in 20 smokers before they vaped and 15 minutes after.
They also exposed 151 mice to e-cigarette vapour over one, three or five days, for 20 minutes six times a day.
Their results found one vaping episode increased heart rates and caused the arteries to stiffen, and the inner lining of the arteries - the endothelium - stopped working properly in smokers.
In the mice, blood vessels, including in the lungs and brain, appeared to become damaged.