Coffee consumption is associated with a modest reduction of total cancer incidence.
Caffeine has positive cognitive and physiological effects at moderate doses.
One of the reasons it’s so difficult to study the relationship between diet and cancer is because many dietary behaviors are associated with nondietary behaviors. For example, the reasons we used to think coffee drinking caused cancer was because people who drink coffee are more likely to have a cigarette in the other hand. When you factor that out, though, for example, by just looking at nonsmokers who do or don’t drink coffee we find that if anything coffee consumption may reduce the total cancer incidence.
Not by much, but overall, according to the latest review, an increase in consumption of 1 cup of coffee per day was associated with about a 3% reduced risk of cancers, especially bladder cancer, breast cancer, mouth, colorectal, endometrial, esophageal, liver, leukemic, pancreatic, and prostate cancers.
Coffee beans aren’t really beans, but you are, after all, just soaking a powdered seed in some water, so a reduction in cancer risk not that surprising.
To see any graphs, charts, graphics, images, and quotes to which Dr. Greger may be referring watch the above video. This is just an approximation of the audio contributed by veganmontreal.
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What about the caffeine though? Find out in tomorrow's video-of-the-day! I still don't recommend people drink coffee—not because it's not healthy, but because there are even healthier choices. Coffee is like a banana, a common convenient plant-based food. If you have a choice, I'd encourage people to make healthier fruit choices (apples are better, berries are best) and choose a healthier beverage, like green tea. See my 20 videos on tea, as well as the hundreds of other videos on more than a thousand subjects. Note that the meta-analysis this video is based upon is open access, so you can download it by clicking on the link above in the Sources Cited section.
For more context, check out my associated blog posts: Coffee Caveats, Poultry and Penis Cancer, Gerson Therapy for Cancer?, Avoid Cooked Meat Carcinogens, Treating Parkinson's Disease with Diet, and Breast Cancer & Alcohol: How Much Is Safe?
All three human studies on soy and breast cancer survival suggest that soy in sufficient amounts may improve survival in women diagnosed with breast cancer.
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