Geybels also pointed out that too much coffee might even be unhealthy for some men.
"For instance, men with hypertension [high blood pressure] may be vulnerable to the adverse effects of caffeine in coffee," he said. "Or, specific components in coffee may raise serum [blood] cholesterol levels, posing a possible threat to coronary health. Patients who have questions or concerns about their coffee intake should discuss them with their general practitioner."
The study was funded by the U.S. National Cancer Institute, the Prostate Cancer Foundation, the Dutch Cancer Society and the Fred Hutchinson Cancer Research Center.
To learn more about prostate cancer, visit the American Cancer Society.
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