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Supplements and Cancer Risks
Muscle Supplements Linked to Testicular Cancer
For men who used more than one kind of muscle-building supplement, the risk of developing testicular cancer was 177% greater. Consuming supplements for three years or longer resulted in a 156% risk increase.
The study only suggests correlation, not causation.
“The observed relationship was strong,” explained study leader Tongzhang Zheng, who carried out the researcher at Yale before moving to Brown University’s School of Public Health as an epidemiology professor. “If you used at earlier age, you had a higher risk. If you used them longer, you had a higher risk. If you used multiple types, you had a higher risk.”
Testicular cancer rates have been rising over the last several decades, and researchers haven’t been able to pinpoint why. This latest study — published this week in the British Journal of Cancer — offers clues.