The gene linked to aggression is the MAOA gene (Monoamine Oxidase A), often nicknamed the "warrior gene," because certain low-activity variations of it are associated with increased aggressive and impulsive behavior, especially when combined with childhood adversity. This gene helps break down neurotransmitters like serotonin, dopamine, and norepinephrine, and low activity leads to a buildup that may affect impulse control.
Monoamine oxidase A gene (MAOA) has earned the nickname “warrior gene” because it has been linked to aggression in observational and survey-based studies.
A further analysis found that two genes in particular, 'cadherin 13' (CDH13) - a gene involved in neural connectivity and 'monoamine oxidase A' (MAOA), a controller in dopamine levels in the brain, were associated with criminal behaviour.
The MAOA gene provides instructions for making an enzyme called monoamine oxidase A. This enzyme is part of a family of enzymes that break down molecules called monoamines through a chemical reaction known as oxidation.
The short answer to the question, “Are anger issues genetic?” is they can be. Genes play a part in the anger experience, anger regulation, and the expression of anger. In fact, some studies show that roughly half the variance of anger expression is determined by genes.
The gene for RAGE is located on chromosome 6p21. 3 in the class II/III junction of major histocompatibility complex locus and is composed of a 1.7-kb 5′ flanking region, 11 exons, 10 introns, and a 3′ UTR (Sugaya et al.
ADHD rage refers to sudden, intense episodes of anger that feel like they come out of nowhere and completely overwhelm you. You might find yourself thinking, “Where did that come from?” or feeling frustrated that you can't seem to control these emotional outbursts the way others do.
These studies together show that about half (50%) of the variance in aggressive behavior is explained by genetic influences in both males and females, with the remaining 50% of the variance being explained by environmental factors not shared by family members.
One factor that seems to play a role in the development of antisocial and violent behavior in people with the deviant MAOA gene is their upbringing and their history of trauma. Researchers have found some correlation between violent behavior and childhood abuse and trauma.
It is unequivocally clear that murderers are both born and made through their genes and their environment. There is some common genetic makeup amongst killers, such as the presence of the MAOA and CDH13 genes; however, a single gene is not convincing enough evidence to prove an individual is a murderer.
While humans are genetically predisposed to engage in aggressive behaviors to survive, other forms of aggression are not “natural” human qualities.
CDH13 was identified as a ADHD-related gene in 2008, and it is one of the most important genes associated with ADHD,26 which is a disorder strongly associated with violent criminality.
Ted Bundy had MAOA-L which means he could not control his aggressiveness and was more impulsive. In addition, his lover abandoning him was a devastating experience for him, which fueled his rage and motivated his murders. Individuals with low MAOA are more prone to violence than subjects without (Highsmith).
A simple DNA test can determine a man's MAOA gene version and the two possible versions for women. Knowing this can provide insights into potential genetic tendencies.
One common trigger is frustration when a child cannot get what he or she wants or is asked to do something that he or she might not feel like doing. For children, anger issues often accompany other mental health conditions, including ADHD, autism, obsessive-compulsive disorder, and Tourette's syndrome.
Disease Cause: The causes of rage syndrome are genetic in nature, and some dog breeds are far more likely to develop this problem than others.
The MAOA gene is located on the X-chromosome. Men inherit only one X chromosome, so they have only one version of MAOA. If a man inherits the “warrior” gene, they are more likely to be affected by it. Women have two X chromosomes; hence they can inherit two different versions of the gene.
Biological, psychological, and socioeconomic influences must be considered when discussing the etiology of aggression. Biological causes include genetics, medical and psychiatric diseases, neurotransmitters, hormones, substance use, and medications.
Previous studies have linked polymorphisms of the monoamine oxidase A (MAOA uVNTR) and serotonin transporter gene (5-HTTLPR) to individual differences in the expression of psychopathic traits, but findings remain inconsistent.
Over twenty years of research has shown that there are links between genetics and aggressive behaviors. For instance, deficient activity of a gene called monoamine oxidase A (MAOA) is known to increase the risk of violence in individuals who have experienced some type of childhood trauma.
Examples of Precipitating Factors
The causes behind aggressive behavior can include (but are not limited to): Fear, anxiety, stress. Unmet physical needs (hunger, silence) or emotional needs (recognition, love) Traumatic experiences.
The presence of some hormones or the stimulation of certain sections of the brain has been experimentally linked with aggression. But after describing these mechanisms in some detail, physiological psychologist Kenneth E. Moyer emphasizes that aggressive behavior is always linked to an external stimulus.
Irritability (angry, touchy, temper outbursts) and oppositional behavior are common in ADHD-C and in autism. In a pediatric clinical sample, aggression (physical, verbal, or relational) was significantly associated with irritability.
The 24-hour rule for ADHD is a self-regulation strategy to combat impulsivity by creating a mandatory waiting period (often a full day) before reacting to emotionally charged situations or making significant decisions, allowing time for reflection and reducing regretful snap judgments, especially for things like impulse purchases or arguments. It's a pause button that gives the brain space to process, move from impulse to intention, and evaluate choices more logically, helping manage ADHD's impact on emotional regulation and decision-making.