The effects of smoking tobacco on human health are becoming startlingly clear. The reason for the long delay in recognising these health effects is in part due to the delay between starting smoking and the advent of health effects. The tobacco industry has been aware of these adverse health effects and has played them down over the years, even going to ellaborate lengths, providing counter-arguement scientific data, disputing prevailing scientific thinking, criticising anti-smoking lobbies and, through advertising and public media, presenting confusing and distorted information on the health effects of smoking.