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Coffee has certainly had its fair share of negative attention. Many people who drink coffee do so with the feeling that their habit is a guilty pleasure, one they should probably cut back on. But is coffee bad for you after all? Not so fast.
We recently reported on how drinking coffee might help tinnitus, as well as how it can lower your risk for Alzheimer’s disease. You might be surprised (and pleased) to learn that coffee can also lower your risk for certain types of cancers.
Drinking Coffee Lowers Your Risk of Certain Cancers
Studies show that greater coffee intake can protect you against certain types of cancers, including the following:
- Melanoma. The Journal of the National Cancer Institute published a study that found that people who drank four or more cups of coffee per day had a 20 percent lower risk of malignant melanoma, a deadly form of skin cancer. The association was only true for caffeinated coffee, not decaf.
- Prostate cancer. One review of numerous studies concluded that men who drink four to five cups of coffee per day may have up to a 14 percent lower risk of prostate cancer compared to those who drink less than one cup per day. Another study found that men who drank at least one cup of coffee per day before diagnosis had a 56 percent reduction in risk of recurrence or progression of their prostate cancer later on. Men who drank more than four cups per day had a 59 percent reduction in risk.
- Breast cancer. Women with higher intakes of caffeinated coffee may be protected against breast cancer. This association is particularly strong for breast cancer occurring after menopause, as well as specific subgroups of breast cancer, such as estrogen-receptor-negative cancers.[4,5]
- Liver cancer. Numerous studies have consistently found that coffee can protect against liver cancer.
- Colorectal cancer. Higher coffee intake is also associated with a lower risk of colorectal cancer.
How Does Coffee Fight Cancer?
Although researchers don’t yet know the full story, coffee seems to have numerous qualities that help fight and protect against cancer. For starters, coffee is full of antioxidants.
In fact, coffee may be one of the biggest contributors to dietary antioxidant intake, because it is so widely consumed and is such a rich source of these health-promoting compounds. This antioxidant capacity, along with other qualities, allows coffee to help protect from oxidative damage, which contributes to cancer.
Studies have also shown that coffee might help prevent cancer by regulating genes involved in DNA repair, detoxification and more. It also can help induce cell death in tumor cells, fight inflammation, prevent formation of new blood supply to tumors, and help stop metastasis.
Healthy Coffee Intake
For you coffee drinkers out there, this is good news worth celebrating: Cutting coffee out of your life is probably not necessary, or even the healthiest choice. You can now enjoy your morning cup of coffee, and maybe a few more throughout the day, with guilt-free pleasure.
But this doesn’t mean you should go out and guzzle 10 cups a day. Drinking too much caffeine can cause sleep disruptions and other problems. Many studies show that simply drinking at least one cup of coffee per day can be effective, so there is no need to overdo it. Limit your intake to no more than three to five cups per day for best results.
Share Your Experience
Do you drink coffee? Do you think coffee is bad for you, or do you see it as a healthy choice? Share your thoughts in the comments section below.
 J Natl Cancer Inst. 2015 Jan 20;107(2).
 Cancer Causes Control. 2014 May;25(5):591-604.
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 Mol Nutr Food Res. 2014 May;58(5):915-30.
 Int J Clin Exp Med. 2014 Dec 15;7(12):5192-200.