Hey Brian, thank you so much for reading and taking the time to comment. Unfortunately, that’s not really a good comparison because dopamine does play a role in learning and motivation, whereas oxygen only plays a role in murders when someone deprives someone else of it.

Otherwise, oxygen doesn’t play any role whatsoever.

We know this from research on people given extra dopamine or deprived of dopamine—people on amphetamine are highly motivated!

In terms of serotonin, I included the research on the subject. Here’s some more:

“Somatic symptom disorder (SSD) and antisocial personality disorder (APSD) are found at higher rates within families compared to the general population. Both disorders are characterized by low serotonin levels, which may be attributed to polymorphisms in the dopa decarboxylase (DDC) gene. The polymorphism rs11575542 of the gene leads to decreasing the efficiency of aromatic l-amino decarboxylase (AADC) and serotonin levels in a person. The polymorphism is also associated with the development of somatic symptoms and sensation-seeking behavior, a trait underlying APSD. Hence, the role of this polymorphism as an underlying feature that may predispose a person to develop APSD or SSD should be explored further in future studies.” 1.

…and this…

“There is no single cause of ASPD, but the following factors may increase a person’s risk of developing the disorder:

• Biology: People with ASPD may have unusual levels of serotonin. Serotonin is a chemical in the brain that regulates our mood and feelings of happiness.
• Environment: Trauma or abuse early in childhood increases the risk of developing ASPD later in life.
• Genetics: There may be some genetics factors that can predispose some individuals to develop ASPD. However, there is no one genetic factor that is thought to be responsible for the condition.
• Lifestyle: About half of people with ASPD also have problems with drug or alcohol abuse.
• Sex: Men are more likely than women to develop ASPD.” 2.

Sources:

1. https://pubmed.ncbi.nlm.nih.gov/32850196/
2. https://my.clevelandclinic.org/health/diseases/9657-antisocial-personality-disorder

Here’s some more research to look through:

1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4293164/
2. https://pubmed.ncbi.nlm.nih.gov/23457595/

Cheers,
Joe