Weight loss led to reduction in inflammation

(Press-News.org) PHILADELPHIA — Postmenopausal women who were overweight or obese and lost at least 5 percent of their body weight had a measurable reduction in markers of inflammation, according to a study published in Cancer Research, a journal of the American Association for Cancer Research.

"Both obesity and inflammation have been shown to be related to several types of cancer, and this study shows that if you reduce weight, you can reduce inflammation as well," said Anne McTiernan, M.D., Ph.D., director of the Prevention Center at the Fred Hutchinson Cancer Research Center in Seattle, Wash.

Women in the trial who were assigned to a weight loss intervention had a goal of 10 percent weight reduction during the course of one year achieved through a diet intervention with or without aerobic exercise.

"So this program was highly achievable and reproducible. We are not talking about drastic weight loss," said McTiernan.

The researchers measured levels of C-reactive protein, serum amyloid A, interleukin-6, leukocyte and neutrophil in 439 women.

At the end of one year, C-reactive protein reduced by 36.1 percent in the diet-alone group and by 41.7 percent in the diet and exercise group. Interleukin-6 decreased by 23.1 percent in the diet group and 24.3 percent in the diet and exercise group.

McTiernan and colleagues found a mild dose response, as there were greater reductions in these measures among women who lost at least 5 percent of their body weight. They also found that exercise alone, without a dietary weight loss component, had little effect on inflammation markers.

"This study adds to the growing understanding we have about the link between obesity and cancer, and it appears we can affect inflammation directly through nonpharmaceutical means," said McTiernan.

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Founded in 1907, the American Association for Cancer Research (AACR) is the world's first and largest professional organization dedicated to advancing cancer research and its mission to prevent and cure cancer. AACR's membership includes 34,000 laboratory, translational and clinical researchers; population scientists; other health care professionals; and cancer advocates residing in more than 90 countries. The AACR marshals the full spectrum of expertise of the cancer community to accelerate progress in the prevention, biology, diagnosis and treatment of cancer by annually convening more than 20 conferences and educational workshops, the largest of which is the AACR Annual Meeting with more than 18,000 attendees. In addition, the AACR publishes seven peer-reviewed scientific journals and a magazine for cancer survivors, patients and their caregivers. The AACR funds meritorious research directly as well as in cooperation with numerous cancer organizations. As the Scientific Partner of Stand Up To Cancer, the AACR provides expert peer review, grants administration and scientific oversight of individual and team science grants in cancer research that have the potential for patient benefit. The AACR actively communicates with legislators and policymakers about the value of cancer research and related biomedical science in saving lives from cancer.

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