Among non-smokers, a 2 cup/day increase in coffee consumption was associated with a:
during a 30-year follow-up (1982-2012).
However, the risk of dying from breast cancer, colorectal cancer and liver cancer was reduced in non-smokers.
Among smokers and former-smokers, coffee consumption was associated with an increase in cancer deaths.
The study, done by the American Cancer Society, included 922,896 Cancer Prevention Study-II participants aged 28-94 years who completed a four-page questionnaire and were cancer free at baseline in 1982.
“These findings are consistent with many other studies that suggest coffee drinking is associated with a lower risk of colorectal, liver, female breast and head and neck cancer,” the authors of the study concluded.
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