2. May Help Fight Cancer
Eat This, Not That! found research on animals that shows walnuts could help in the fight against certain cancers like prostate, breast, and colorectal. One study in particular found smaller and slower-growing prostate tumors in mice who were given the human equivalent of 2.4 ounces of whole nuts for 18 weeks, as opposed to those who were given the same amount of fat from other sources. The results found that walnuts reduced prostate cancer growth by 30 to 40-percent. A different mice study found that the equivalent of two handfuls of walnuts a day reduced the risk of breast cancer by 50-percent.
According to Healthline, the cancer fighting properties in walnuts might be due to the fact that they contain polyphenol ellagitannins which can be converted by some gut microbes into compounds called urolithins. “Urolithins can have anti-inflammatory properties in your gut, which may be one way that eating walnuts helps protect against colorectal cancer. Urolithins’ anti-inflammatory actions could also help protect against other cancers,” writes the source. In addition to that, urolithins are able to block hormone receptors the body which could reduce the risk of hormone-related cancers like breast and prostate.