Tuesday, April 13, 2010

Does Stress Feed Cancer?

PUSHING IT: Stress is linked indirectly to the immune system's anti-tumor defenses, but it can also affect anoikis--a type of cell death that cancer cells bypass. iStockphoto

From Scientific American:


A new study shows stress hormones make it easier for malignant tumors to grow and spread.

A little stress can do us good—it pushes us to compete and innovate. But chronic stress can increase the risk of diseases such as depression, heart disease and even cancer. Studies have shown that stress might promote cancer indirectly by weakening the immune system's anti-tumor defense or by encouraging new tumor-feeding blood vessels to form. But a new study published April 12 in The Journal of Clinical Investigation shows that stress hormones, such as adrenaline, can directly support tumor growth and spread.

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