Testosterone link to raised risk of death

US researchers followed more than 8700 men with low levels of the hormone, of whom 1223 took a testosterone supplement after having coronary angiography.

Three years later, one in four of those treated with testosterone had had an MI, an overall increased risk of almost 30% over the group who did not.

Professor David Handelsman, director of the ANZAC Research Institute at the University of Sydney, said he was sceptical because the trial was observational.

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