Dr Bill O'Neill, tobacco adviser to the BMA, said that the prospect of heart disease or cancer in 30 years time was not as powerful as the chance of impotence in 10 years time. But the prospect that they might wreck their sex lives just might make them stop and think. The same process by which smoking causes heart diseases is responsible for impotence. In addition, nicotine makes blood vessels into and out of the penis narrow still further. While this effect stops immediately the man quits smoking, the arterial hardening takes some time to reverse.
Cigarettes sold in Thailand already carry impotence warnings.
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