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People with low IQ are more likely to become depressed due to various interconnected factors. Individuals with lower IQs exhibit differences in brain structure and function, including neurotransmitter systems such as serotonin, dopamine, and noradrenaline, which play key roles in mood regulation. Variations in these systems, as seen in individuals with low IQ, can predispose them to mood disorders, including depression. Additionally, lower cognitive reserve can make it harder for these individuals to cope with neurobiological vulnerabilities to stress and mental health issues. Cognitive reserve refers to the brain's ability to compensate for damage, and people with higher cognitive reserve might better manage the neurobiological changes associated with depression.
There is also a correlation between lower IQ and a higher incidence of adverse childhood experiences. These experiences, including abuse, neglect, and household dysfunction, are significant predictors of depression in later life. Furthermore, a well-documented association exists between lower IQ and lower socioeconomic status (SES). Lower SES can lead to increased exposure to chronic stressors such as financial instability, job insecurity, and poor living conditions, all of which are significant risk factors for depression.
In conclusion, lower IQ is associated with an increased likelihood of depression primarily due to neurobiological factors such as differences in brain structure and function and a lower cognitive reserve, which affects the brain's ability to cope with stress and adversity. These neurobiological vulnerabilities are compounded by psychosocial factors, including limited access to resources, reduced educational and occupational opportunities, and greater exposure to chronic stressors.
There is also a correlation between lower IQ and a higher incidence of adverse childhood experiences. These experiences, including abuse, neglect, and household dysfunction, are significant predictors of depression in later life. Furthermore, a well-documented association exists between lower IQ and lower socioeconomic status (SES). Lower SES can lead to increased exposure to chronic stressors such as financial instability, job insecurity, and poor living conditions, all of which are significant risk factors for depression.
In conclusion, lower IQ is associated with an increased likelihood of depression primarily due to neurobiological factors such as differences in brain structure and function and a lower cognitive reserve, which affects the brain's ability to cope with stress and adversity. These neurobiological vulnerabilities are compounded by psychosocial factors, including limited access to resources, reduced educational and occupational opportunities, and greater exposure to chronic stressors.