An analysis of 20,928 postmenopausal women showed that the taller a woman is, the greater her risk for a number of cancers, including breast, colon and skin cancer, among others. Scientists say the association between height and cancer may help guide researchers to study hormones and growth factors that influence height and may also play a role in cancer.
"We know that cancer is a disease in which hormones and growth factors modify things," said Geoffrey C Kabat, a senior epidemiologist in the department of epidemiology and population health at the Albert Einstein College of Medicine of Yeshiva University in New York. "Height itself is not a risk factor, but it really appears to be a marker for one or more exposures that influence cancer risk."
Nobody really knows why cancer risk is associated with a taller stature. It may have to do with hormones and growth factors that spur both height and cancer cells. It may be that height simply increases the surface area of the body's organs, resulting in a greater number of overall cells and higher subsequent risk of malignancy.
While the current study focused only on women, other research has also found an association between height and cancer among men. One study found that taller men were at slightly higher risk for aggressive prostate cancer. In May, the Journal of the National Cancer Institute reported that height differences between men and women may help explain why men have an overall greater risk of developing cancer in nonsex specific organs like kidneys and lungs.
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