Two findings: elderly Japanese drinking seven or more cups of green tea a day were less likely to die prematurely over six years in a cohort of 14,001, though cancer deaths showed no link; and in lab tests the green tea compound EGC raised a bone-building enzyme's activity by up to 79 percent.
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Cancer
Diet, lifestyle and cancer risk, prevention and treatment.
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Comments
Banana diet, water spray in stores, and diet and cancer
Karen Collins of the American Institute for Cancer Research answers reader questions, saying the Banana Diet's reported results likely come from its other rules rather than bananas, and that grocery store misting of produce has not been shown to reduce nutrient value.
Vitamins
Vitamin C fights cancer - study
High doses of vitamin C raised survival by 20 percent in mice injected with sarcoma cells, Korean researchers report. Gene expression and wound-healing tests pointed to blocked angiogenesis, with the vitamin altering three genes controlling bFGF, VEGF and MMP2.
Food
Who Knew? Popcorn helps fight cancer
Joe Vinson of the University of Scranton told the American Chemical Society that popcorn carries the highest levels of polyphenol antioxidants among whole grain snacks. Antioxidants are believed to help fight cancer; researchers had previously credited whole grains' fiber.
Cancer
NUTRITION NOTES: Changing the Picture for Senior Cancer Survivors
Karen Collins of the American Institute for Cancer Research writes that senior cancer survivors face both second cancers and functional decline, and that weight control, moderate activity and healthy eating may cut risk and improve quality of life. Mailed and phone programs show early promise.
Environment
Radiation raises diabetes risk in cancer survivors
An Archives of Internal Medicine study compared 8,599 childhood cancer survivors with 2,936 siblings and found 2.5 percent had diabetes against 1.7 percent. Abdominal radiation raised the odds 2.7-fold and total body radiation 7.2-fold, unrelated to BMI or activity.
Food
Drinking beer and spirits raises cancer risk
Andrea Benedetti's team compared non-drinkers with weekly and daily drinkers and found the heaviest beer and spirits drinkers were seven times more likely to develop esophageal cancer, 80 percent more likely to get colon cancer and 50 percent more likely to get lung cancer.
Food
Green tea prevents blood cancer
Following 41,761 Japanese adults for nine years, researchers found those drinking five or more cups of green tea a day had 42 percent lower risk of blood cancers and 48 percent lower risk of lymphoid neoplasms. The authors say the finding does not establish cause.
Cancer
Einstein scientists link elevated insulin to increased breast cancer risk (press release)
Albert Einstein College of Medicine researchers report in the International Journal of Cancer that elevated blood insulin appears to raise breast cancer risk in postmenopausal women. Unlike earlier conflicting studies, theirs used repeated insulin measurements taken over several years.
Minerals
Manganese linked to cancer deaths
A North Carolina ecological study correlated groundwater manganese with 28 percent more colon cancer deaths and 26 percent more lung cancer deaths at county level, while airborne manganese tracked with fewer total, breast and lung cancer deaths.
Disease
Cancer cells need normalcy to survive chaos they create
Harvard Medical School and Brigham and Women's researchers Ji Luo and Stephen Elledge report that cancer cells depend on normal cell function to survive the stress their own abnormality creates, needing what the authors call equal parts vice and virtue to keep growing.
Cancer
Folic acid may boost colorectal cancer risk
Since Chile mandated folic acid fortification of flour, colorectal cancer rates rose 162 percent among people aged 49 to 64 and 190 percent among those 65 to 79, a University of Chile team reports. Critics point to obesity, smoking and heavy drinking as alternative explanations.
Cancer
Drinking Hot Tea May Cause Throat Cancer
People in northern Iran who drank tea hotter than 70 degrees Celsius were eight times more likely to have throat cancer than those drinking it below 65, in a study of 300 esophageal cancer patients and 571 others. The authors suspect repeated injury to the esophagus.
Cancer
Breast cancer: What you need to know
After Christina Applegate's breast cancer was found on a routine MRI, the piece reviews prevention research foodconsumer.org has covered, including a study in which female rats fed 250 mg of kelp daily lengthened their cycle 37 percent and cut estradiol 25 percent.
Cancer
Sodium raises gastric cancer risk, vitamin E reduces it
An Italian case-control study of 230 gastric cancer patients and 547 controls found people in the top quartile for vitamin E, alpha-carotene and beta-carotene were 50, 48 and 58 percent less likely to have the disease, while all quartiles above the lowest sodium intake had about 2.5 times the risk.
Cancer
Blowing Out the Fuse: How Our Bodies Stop Cancer Before It Starts
The American Institute for Cancer Research describes how enzymes clear cancer-sparking substances and antioxidants neutralize free radicals, and how repeated exposure can rewrite a cell's DNA instructions so it reproduces uncontrollably. Plant-rich diets help keep those defenses running.
Cancer
Pancreatic cancer: What you need to know
Carnegie Mellon professor Randy Pausch, known for his last lecture, died of pancreatic cancer at 47. The disease was projected to be diagnosed in 37,680 Americans and kill 34,290 in 2008. Smoking is the main avoidable risk; a Karolinska study tied sweetened food and drink to higher risk.
Cancer
Vitamin A pushes breast cancer to form blood vessel cells
Georgetown researchers found that vitamin A applied to breast cancer cells switches on genes that push tumor stem cells to become endothelial cells able to build blood vessels. Senior author Stephen Byers calls it a disturbing hint that retinoid drugs might stimulate tumor growth.
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