A new study published in the Endocrine Society’s Journal of Clinical Endocrinology & Metabolism has revealed that tomatoes act as a preventative measure for breast cancer. Eating a diet high in tomatoes had a positive impact on the level of hormones that play a role in regulating fat and sugar metabolism. The women involved in this study ate tomato products containing 25 milligrams of lycopene on a daily basis for 10 weeks. For a separate 10 week period the study group consumed at least 40 grams of soy protein daily.
“The advantages of eating plenty of tomatoes and tomato-based products, even for a short period, were clearly evident in our findings,” said the study’s first author, Adana Llanos, PhD, MPH, who is an Assistant Professor of Epidemiology at Rutgers University. “Eating fruits and vegetables, which are rich in essential nutrients, vitamins, minerals and phytochemicals such as lycopene, conveys significant benefits. Based on this data, we believe regular consumption of at least the daily recommended servings of fruits and vegetables would promote breast cancer prevention in an at-risk population.”
When the effects of the tomato-rich diet were charted participants’ levels of adiponectin, a hormone involved in regulating blood sugar and fat levels, climbed 9 percent. The effect was slightly stronger in women who had a lower body mass index.
“The findings demonstrate the importance of obesity prevention,” Llanos said. “Consuming a diet rich in tomatoes had a larger impact on hormone levels in women who maintained a healthy weight.”
Adana Llanos, PhD, MPH et al. Effects of Tomato and Soy on Serum Adipokine Concentrations in Postmenopausal Women at Increased Breast Cancer Risk: A Cross-over Dietary Intervention Trial. Journal of Clinical Endocrinology & Metabolism, December 2013