The remaining tests were carried out on heterozygous mutant adult mice; both sexes had decreased IgG1 levels while males also displayed abnormal spine curvature resulting in kyphosis.

Tell your doctor immediately if any of these unlikely but serious side effects occur: severe/pounding headache, shakiness (tremor), decreased interest in sex, changes in sexual ability.

Of course, there's a nature-nurture issue here as well, and the fact that the sex differential in crime has decreased over this century suggests that environment has played a part.

Tell your doctor immediately if any of these unlikely but serious side effects occur: unusual or severe mental/mood changes (such as confusion, difficulty concentrating, nervousness, unusual high energy/excitement, rare thoughts of suicide), decreased interest in sex, changes in sexual ability.