Lennox Johnston

Lennox Johnston (15 May 1899 – 18 January 1986) was a Glaswegian GP and amateur scientist who pioneered research in the addictiveness of nicotine in the 1930s and campaigned against the harmful effects of smoking. Although initially dismissed, he was fully justified and was honored by the Royal College of Physicians in 1976, where Sir Cyril Clarke likened his contribution to that of the work by Semelweis on preventing sepsis.