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High-fat diet during puberty speeds up breast cancer development
Date:11/26/2013

New findings show that eating a high-fat diet beginning at puberty speeds up the development of breast cancer and may actually increase the risk of cancer similar to a type often found in younger adult women.

The research comes from the Breast Cancer and the Environment Research Program at Michigan State University and is published in the current online issue of Breast Cancer Research.

Utilizing a preclinical model, the findings indicate that before any tumors appear, there are changes in the breast that include increased cell growth and alterations in immune cells. These changes persist into adulthood and can lead to the rapid development of precancerous lesions and ultimately breast cancer.

In addition to the accelerated breast cancer development, this type of diet produces a distinct gene signature in the tumors consistent with a subset of breast cancers known as basal-like that can carry a worse prognosis.

"This is very significant because even though the cancers arise from random mutations, the gene signature indicating a basal-like breast cancer shows the overarching and potent influence this type of diet has in the breast," said Sandra Haslam, physiology professor in MSU's College of Human Medicine and one of the lead investigators of the project.

"Cancers of this type are more aggressive in nature and typically occur in younger women. This highlights the significance of our work toward efforts against the disease."

Richard Schwartz, microbiology professor and associate dean in the College of Natural Science, has co-led research efforts with Haslam since 2010. The research is funded by a five-year, $2.3 million federal grant from the National Institute of Environmental Health Sciences and the National Cancer Institute.

"It's important to note that since our experimental model did not involve any weight gain from the high-fat diet, these findings are relevant to a much broader seg
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Contact: Sarina Gleason
sarina.gleason@cabs.msu.edu
517-355-9742
Michigan State University
Source:Eurekalert  

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