Yuan is a research fellow and Ng is an associate professor of medicine at the Dana Farber Cancer Institute.

Excluding skin cancers, colorectal cancer is the third most common cancer diagnosed in the United States.

It has also been found to have antioxidant, anti-inflammatory, anti-cancer properties.

Close up macro photo of roasted coffee beans.

Igor Haritanovich / Pexels

Both regular and decaf coffee stimulates colonic motor activity.

For some people, a cup of coffee can have a laxative effect.

Data were collected from October 27, 2005, to January 18, 2018.

The original trial sought to find the optimal biologic therapy and chemotherapy treatment combination.

Participants also had the option to participate in a diet and lifestyle companion study.

On average, the frequent coffee drinkers consumed less than four cups of coffee per day.

We were surprised that consumption of caffeinated and decaffeinated coffee had similar associations with survival outcomes.

The improved patient outcomes applied to both people who drank regular and decaf coffee.

This makes it difficult to isolate coffee consumption from other diet and lifestyle behaviors.

They also say there is no definitive evidence that coffee consumption can prevent colorectal cancer.

Memorial Sloan Kettering Cancer Center.Should I drink coffee to prevent colorectal cancer?

Kendall P.Nutrition column Coffee is a good source of antioxidants.

2019;11(3):E694.

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