The Relationship between Genetics and Violence

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The world has a problem with violence. It is not a new problem, and it not one that is likely to disappear soon. It is estimated that around 1.6 million people die of violence each year. Half of these deaths are attributed to suicide, while the other half are attributed to homicide, war and other conflicts combined. Historically, violence was seen as a social ill. Before the 1970’s, when genetic research began to take hold, most researchers believed that violence was caused by a number of social aspects. Even with our increased knowledge, there are still groups that view violence as a social ill. This is evident in the fact that there are groups like MAVAV, Mothers against Video Game Addiction and Violence, and Parents against Violence. These groups aim to reduce the amount of violence shown in video games and other media, in a hope that it will reduce the rate of violence. Technological advances have allowed researchers to delve into the causes behind violent acts and tendencies. Although genetics does not fully predict who will have violent urges, it does play a large role in the predisposition towards violent tendencies. Some of these causes are linked to hormones, like the amount of adolescent testosterone. Others are linked to brain activity, mainly in the ventromedial prefrontal cortex and the orbitofrontal cortex. There is even some evidence that the MAOA enzyme can play a role in violent expression. Of course, not all causes are genetically based. Although genetics can help determine who will have a predisposition towards violence, there are other factors at play. The peer group that one associates with, the environment that they are raised in, and the home life that they experience all play a role in determining if the vi...

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