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How long have humans been ingesting nicotine?

Humans began ingesting nicotine thousands of years ago. Doctors suspected that smoking was a danger to health dating back to the 1600s, but those suspicions were not verified for ages. It took even longer for the U.S. government to demand warning labels.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.