Studies show a strong link between physical activity and a lower risk of colorectal cancer.

Some show a risk, others fail to find one.

A recent analysis shows an increased risk of breast cancer with alcohol consumption.

Some studies in animals have shown an increased risk of miscarriage.

Studies show an increased risk for heart disease with low-fiber diets.

It doesn't, of course, because that study showed an increased risk.

Meanwhile, no study in women has shown an increased risk of breast cancer among those taking soy.

Some older studies showed a risk of prostate cancer in men who have had vasectomies.

This population right now isn't showing a risk, and that's good.

However, there is no agreement on this number and other studies show a lower risk.