Testosterone

• Testosterone is a androgenic hormone that acts on parts of the brain involved with aggression.
• Both sexes produce testosterone, but males produce 10x more testosterone than women.
• In males, testosterone is produced in the testes from birth.
• Research shows that testosterone is linked with higher levels of aggression during periods that it's elevated, for example during puberty.
• For adult males, 15-25 is when they have the highest levels of testosterone, and when they show the most aggression.