Creatine Muscle-Building Supplements Could Cause Testicular Cancer, Study Warns

A new study published in the British Journal of Cancer warns bodybuilders that supplements, such as creatine and androstenedione, could lead to to heightened risk of testicular cancer, which could go up to 65 percent.

The study was led by Professor Tongzhang Zheng, from Yale University, who told reporters, “The observed relationship was strong. 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.”

Professor Zheng added that the new study was a vital one as, “Testicular cancer is a very mysterious cancer. None of the factors we’ve suspected can explain the increase.”

Meanwhile, Professor Russ Hauser, of the Harvard school of public health, who worked alongside Zheng, also told reporters, “Our study found that supplement use was related to a higher risk of developing testicular cancer. These results are important because there are few identified modifiable risk factors for testicular cancer.”

Interestingly, bodybuilders who used supplements for three years or longer were at a risk of cancer 2.56 times higher than those who never took the muscle-building supplements.

On top of that statistic, the study found men who started using supplements at the age of 25 or younger were also found to have elevated risk, 2.21 times higher than non-users.

The study concluded, “Considering the magnitude of the association and the observed dose-response trends, muscle-building supplements use may be an important and modifiable exposure that could have important scientific and clinical importance for preventing testicular germ cell cancer development if this association is confirmed by future studies.”

The results of the research are bad news for thousands of men who use supplements on a daily basis as part of their weight training regime. It raises some serious questions that need to be taken into account by anyone who is health conscious.

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