Who doesn’t love a juicy fresh peach or a chilled slice of watermelon? New research suggests that both may benefit health in important ways. In a study with mice, polyphenols from peach extract proved to slow the growth and spread of breast cancer. Researchers at Texas A&M AgriLife Research gave the peach extract to mice that had been implanted with breast cancer cells. After 12 days the researchers observed less tumor growth than in control animals. In addition, there was also a paucity of the blood vessel formation that helps cancer spread and less evidence of enzymes involved in cancer spread in the mice fed high levels of the polyphenols. The investigators suggested that eating two to three peaches daily might help to slow or stop breast cancer spread in humans and might even help prevent the disease. As for watermelon, a 12-week study with 13 obese adults with high blood pressure demonstrated that a daily dose of four grams of the amino acid L-citrulline and two grams of L-arginine, both from watermelon extract, led to significantly improved blood pressure when the study subjects were under stress, as well as lowering the participants baseline blood pressures at rest.
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Luis Cisneros-Zevallos et al, “Polyphenolics from peach (Prunus persica var. Rich Lady) inhibit tumor growth and metastasis of MDA-MB-435 breast cancer cells in vivo,” The Journal of Nutritional Biochemistry, 2014; DOI: 10.1016/j.jnutbio.2014.03.001
Arturo Figueroa et al, “Effects of Watermelon Supplementation on Aortic Hemodynamic Responses to the Cold Pressor Test in Obese Hypertensive Adults,” American Journal of Hypertension, doi: 10.1093/ajh/hpt295