
Males of a calmer, more monogamous species had a higher level of stress hormones and a superior ability to regulate blood sugar, in comparison to males of a less calm, less monogamous species, or females of either species . . . Since previous studies of non-human primates by other research groups demonstrates a link between stress hormone levels and monogamy, the UC Irvine group propose that superior stress tolerance and blood sugar regulation is related to monogamy in these mice.

