also cut by 16 percent.
Of course, the idea that high-fiber diets can help keep us __31__ is not new.
It's well-known that fiber can prevent constipation and keep the bowel moving by making stools
bulkier and absorbing water. Prior studies have shown dietary fiber can protect __32__colorectal
cancer and may lower the risks of diabetes and heart disease. There's also a growing body of
evidence linking fiber __33__ weight management.
This new study provides some evidence of yet another potential benefit.
"This is a really important study __34__ that the more fiber you eat during your high school
years, the lower your risk is in developing breast cancer," says Kimberly Blackwell, a breast cancer
specialist at the Duke Cancer Center.
In a commentary accompanying the study in Pediatrics, Blackwell writes, "There is
longstanding evidence that dietary fibers may reduce circulating estrogen levels." And this may
help explain the __35__ risk of breast cancer.