Aging, stress, and chronic disease interact to suppress plasma testosterone in Syrian hamsters.


The effects of old age, chronic disease, and stress on testicular function were examined in Syrian hamsters living on a 12-hr photoperiod. Plasma testosterone concentrations and testes weights were maintained in healthy hamsters 16-19 months of age, but chronic stress decreased plasma testosterone in these old hamsters and not in younger ones (8-11 months… (More)


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