More good news for the women coffee drinkers out there. Tossing back that Venti may reduce your risk of endometrial or uterine cancer. There’s always a caveat with how you take your coffee, though.

The risk dropped when participants drank four or more cups. What one study giveth, another taketh away. Researchers used data on more than 456,000 women from two ongoing studies.

Women who drank four cups of coffee saw their risk drop 18 percent compared to those that drank less than a cup per day.

“We were not surprised by the results that a high versus low intake of coffee was associated with a reduced risk for endometrial cancer, because they were consistent with what has been observed in previous studies,” said study leader Melissa Merritt.

The two trials measured the level of coffee associated with the reduction in risk. One measured 37 ounces of coffee, while another had it measured at 27 ounces. The research is in the February issue of Cancer Epidemiology Biomarkers and Prevention.

Coffee Benefit

While the link was found, the cause-and-effect relationship is still murky. Decaf and regular were not differentiated and researchers are puzzled about the link.

The prevailing theory is that coffee reduces estrogen levels in the body, balancing out hormone levels.

Some are pointing to the antioxidants in coffee. Research has indicated they help slow or prevent cell damage. One area researchers are not signing on is that caffeine is the beneficial property in this risk reduction.

Endometrial cancer afflicts 55,000 women every year, and 10,000 women die every year. Symptoms can include pelvic pain.

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