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Nuts to Your Prostate


UPDATE: This post was updated to clarify the amount of whole walnuts the mice were fed each day.

According a press release from the California Walnut Commission, a new study suggests that eating walnuts may reduce a man's risk for prostate cancer. The researchers, led by a team at the University of California, Davis, fed whole walnuts to mice with prostate tumors and found that their tumors shrank about 50 percent, and grew about 30 percent slower than prostate tumors in control mice. The mice were fed a diet that contained 155 grams of whole walnuts per kilogram of total diet, says lead researcher Paul Davis. In human terms, that amounts to about 80 grams of whole walnuts per day.The study, published in the British Journal of Nutrition, shows that the walnut-fed mice had lower levels of prostate cancer biomarker IGF-1, lower levels of LDL cholesterol, and had differences in their liver metabolome compared to controls. "Davis believes that their findings are not a result of one isolated component, but due to the multiple ingredients found in walnuts that work together," the press release says. "Walnuts are a whole food that provides a rich package of healthful substances, including omega-3 fatty acids, gamma tocopherol (a form of vitamin E), polyphenols, and antioxidants. These likely then work synergistically," Davis tells the California Walnut Commission.

The Scan

LINE-1 Linked to Premature Aging Conditions

Researchers report in Science Translational Medicine that the accumulation of LINE-1 RNA contributes to premature aging conditions and that symptoms can be improved by targeting them.

Team Presents Cattle Genotype-Tissue Expression Atlas

Using RNA sequences representing thousands of cattle samples, researchers looked at relationships between cattle genotype and tissue expression in Nature Genetics.

Researchers Map Recombination in Khoe-San Population

With whole-genome sequences for dozens of individuals from the Nama population, researchers saw in Genome Biology fine-scale recombination patterns that clustered outside of other populations.

Myotonic Dystrophy Repeat Detected in Family Genome Sequencing Analysis

While sequencing individuals from a multi-generation family, researchers identified a myotonic dystrophy type 2-related short tandem repeat in the European Journal of Human Genetics.