positive effects of smoking cigarettes harms not just your physical health, but your mental health too Chart: The Effects of Quitting

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cancer cells do not respond to signals/growth factors/other cells

Methods: A questionnaire was mailed to 21 201 adults, aged 1664 years, selected at random from the registers of 34 British general practices, and to 993 members of the armed services, randomly selected from pay records

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Home Photos Thinking, nicotine and a senior woman smoking a cigarette in her home while looking out from a window