The benefits of coffee, from the perspective of the coffee industry, there are many. In fact, from reducing the risk of death to reducing the risk of certain cancers and diabetes, to reducing the risk of depression and Parkinson's disease, coffee has always been a medical "darling", but you don't know.
Coffee reduces the risk of colorectal cance
A recent (Cancer Epidemiol Biomarkers Prev) study by Stephanie L. Schmit and others at the Norris Comprehensive Cancer Center at the University of Southern California added to the love of coffee, which reduces the risk of colorectal cancer by 26 percent.
This is a population-based study of molecular epidemiology of colorectal cancer in northern Israel. The researchers developed a validated, semi-quantitative questionnaire on the frequency of coffee intake in 5145 patients with colorectal cancer and 4097 healthy people without a history of colorectal cancer.
Median coffee consumption (one to two servings a day) reduced the risk of colorectal cancer by 26 percent after correcting known risk factors, the study data showed. And as coffee consumption increased, the risk of colorectal cancer decreased, a trend evident in both colon and rectal cancer.
I'm surprised! Caffeine didn't work alone. "Coffee contains a variety of ingredients that promote colorectal health, caffeine and polyphenols have antioxidant effects, nigrins promote colon peristalsis, and diterpenoids resist oxidative stress damage," the researchers said.
Coffee reduces Cancer recurrence rate in patients with Colon Cance
Researchers at the Dana-Faber Cancer Institute reported in the Journal of Clinical Oncology that frequent coffee consumption can significantly reduce cancer recurrence and increase the survival rate of patients with stage 3 colon cancer.
The study, which followed up 953 patients with colorectal cancer treated with chemotherapy over a six-month period, found that those who drank four or more cups of coffee a day (about 460 milligrams of caffeine), The risk of cancer recurrence was 42% lower than that of patients who did not drink coffee. During the follow-up, those who drank four or more cups of coffee regularly were 33 percent less likely to die of cancer or any other cause of death than those who did not.
Further analysis showed that the lower risk of cancer was due to caffeine absorbed by patients, rather than the amount of other ingredients in coffee.
Coffee reduces risk of liver cance
A researcher at the Mario Negri Institute of Pharmacology, University of Milan, published a report in the Journal of Clinical Gastroenterology and Hepatology. Any type of coffee may reduce the risk of hepatocellular carcinoma (HCC) by up to 50% (depending on the intake).
The report examined 16 studies conducted between 1996 and 2012, with a total of 3153 cases. The researchers say the positive effect of coffee in preventing liver cancer may be attributed to the well-known effect of coffee in preventing diabetes, which is one of the causes of liver cancer. Another possibility is that coffee prevents cirrhosis and has a beneficial effect on enzymes in the liver.
Coffee reduces the risk of melanoma
According to a study published January 20, 2015 in Journal of the National Cancer Institute, drinking more than four cups of coffee a day can reduce the risk of skin cancer by 20 percent over a decade.
The study looked at four hundred and forty seven thousand participants, who were 50 to 71 years old, who had no cancer at the start of the study, involving a total of 124 food questionnaires. Over the course of more than a decade of research, more than 2900 subjects developed malignant melanoma and more than 1900 developed another type of skin cancer: melanoma in situ.
Excluding factors such as age, diet, and family history and considering only the relationship between caffeine and melanoma, more than four cups of coffee a day can reduce the risk of skin cancer by 20 percent over a decade.
In theory, various ingredients in coffee have been shown to affect a significant number of molecular pathways that reduce the risk of skin cancer associated with ultraviolet light. But such a large sample study of human subjects is persuasive.
Coffee inhibits breast cancer growth
Drinking coffee inhibits tumor growth in women diagnosed with breast cancer and treated with tamoxifen, according to a study published in the journal Clinical Cancer Research by researchers at Skane University Hospital at the University of Lund in the UK. Reduce the risk of recurrence.
The study of 1090 patients diagnosed with primary invasive breast cancer in Sweden assessed the relationship between caffeine and caffeic acid and tumor characteristics and disease-free survival in two substances commonly found in Swedish coffee.
In at least 500 women treated with tamoxifen, the study showed that women who drank at least two cups of coffee a day had a half of the risk of breast cancer recurrence and had a smaller tumor size than women who drank less than two cups of coffee or did not drink coffee. The incidence of hormone-dependent tumors was low.
Caffeine and caffeic acid can block cell cycle progression and enhance cell death, enhancing the efficacy of tamoxifen, the researchers say.
Coffee reduces risk of head and neck cance
A survey of head and neck cancer by the Aichi prefecture Cancer Center in Japan found that people who drank more than three cups of coffee a day had a lower risk of developing head and neck cancer about 40 percent less than those who drank less than one cup.
From reducing the risk of death to reducing the risk of certain cancers and diabetes, to reducing the risk of depression and Parkinson's disease. Coffee seems to have become the "darling" of medicine.
But there seems to be no exact answer to the question of coffee, and while most studies have shown that coffee is more beneficial than bad for most people, no researchers are willing to give a hint of "enjoy your coffee".
The most conservative is: if you are a coffee drinker and are receiving some cancer treatment, don't stop drinking. Healthy people who have no habit of drinking coffee may wish to cultivate the habit of drinking coffee from now on.
How much coffee should I drink every day?
Coffee has many advantages, but there is a limit to everything. How much coffee is good to drink every day? No matter who says it, it's better to look at scientific research!
Professor Hu of Harvard School of Public Health and colleagues have done a large study that suggests that we drink less than 1 cup of coffee, 1 cup of coffee a day, 3 cups of coffee a day among those who never smoke. The risk of all-cause mortality decreased by 6%, 8%, 15% and 12%, respectively, for 3-5 and > 5-cup subjects. The decline in mortality is mainly related to cardiovascular mortality, neurological disease mortality and suicide mortality. The study was published in the journal cycle on Nov. 16, 2015.
Combined with previous studies to reduce the risk of cancer, two or three cups of coffee a day may be a good choice.