HEALTH

The Cigarette Century

1950 CE

History · Contemporary · Holocene · Meghalayan

Lung cancer was once so rare that doctors remembered individual cases; the machine-made cigarette changed that, and in 1950 Doll and Hill's study of London hospital patients named the cause. Their fifty-year cohort of British doctors then delivered epidemiology's most famous numbers: smokers died about ten years early, and stopping at thirty erased almost all the excess risk. The industry answered with an orchestrated campaign of doubt that kept even physicians unconvinced for a decade.

Why it matters

The cigarette has been called the deadliest artefact in human history, on the order of a hundred million deaths in the twentieth century and a continuing toll of millions a year. The discovery of its harms founded modern risk epidemiology, the long cohort study, and the playbook of scientific denial that other industries later borrowed. One consumer product, one method to convict it, one template for fighting back.

Dating & uncertainty

The anchor is the 1950 study by Doll and Hill linking smoking to lung cancer, confirmed by their fifty-year follow-up of British doctors: lifelong smokers lost about ten years of life, and quitting by thirty recovered nearly all of them. Lung cancer had been a rarity before mechanised cigarette manufacture; the industry's organised denial of the evidence lasted decades.

Sources

1. Doll & Hill (1950), British Medical Journal · Smoking and carcinoma of the lung: preliminary report
2. Doll et al. (2004), BMJ · Mortality in relation to smoking: 50 years' observations on male British doctorsdoi:10.1136/bmj.38142.554479.AE
3. Proctor (2012), Tobacco Control · The history of the discovery of the cigarette-lung cancer link: evidentiary traditions, corporate denial, global tolldoi:10.1136/tobaccocontrol-2011-050338

Our species’ history as one day

23:59:3920.8 s before midnight

if the 315,000 years of Homo sapiens were compressed into a single day