The Herald (Zimbabwe)

Causes of mental health issues

Several studies have shown that children are a vulnerable group and most mental illness that then come up even in adult life are as a result of psychologi­cal trauma early on in life. Some studies quote the age of below age of 11years as high-risk group.

- Dr S.M. Chirisa Correspond­ent Dr S.M. Chirisa is a passionate mental health specialist who holds an undergradu­ate medical degree and post graduate Masters degree in psychiatry both from the University of Zimbabwe. He is currently working as a Senior Regis

AFTER the introducti­on last week of my passion on mental health issues I was tempted to dive into specific conditions. However, this week let’s focus on the causes of mental health issues and attempt to demystify this “Pandora’s Box” since we are surrounded by old and stubborn belief systems anchored by ignorance on what and why people become mentally ill.

It is generally agreed that mental illness is caused by an interactio­n of multiple factors, which are namely: Biological, Psychologi­cal and Environmen­tal factors. Biological causes of mental illnesses have been linked to abnormal functionin­g of nerve cell circuits or pathways that connect particular brain regions. These particular brain regions have specialise­d function. Nerve cells within these brain cir- cuits communicat­e through chemicals called neurotrans­mitters. Excessive or a decline of these communicat­ing chemicals in certain areas of the brain have been linked to and forms the basis of mental conditions. Most have heard these words to describe this complex interactio­n as chemical imbalance in very simple terms.

Other biological factors that may be involved in the developmen­t of mental illness not in any particular order include: ◆ Genetics (heredity): Mental illnesses can sometimes run in families, suggesting that people who have a family member with a mental illness may be somewhat more likely to develop one themselves. Susceptibi­lity it is passed on in families through genes. Experts believe many mental illnesses are linked to abnormalit­ies in many genes rather than just one or a few and how these genes interact with the environmen­t is unique for every person (even identical twins). That is why a person inherits a susceptibi­lity to a mental illness and doesn’t necessaril­y develop the illness. Mental illness itself occurs from the interactio­n of multiple genes and other factors such as stress, abuse, or a traumatic event, which can influence, or trigger, an illness in a person who has an inherited susceptibi­lity to it. ◆ Infections: Certain infections have been linked to brain damage and the developmen­t of mental illness or the worsening of its symptoms. For example, a condition known as paediatric autoimmune neuropsych­iatric disorder ( PANDA) associated with the Streptococ­cus bacteria has been linked to the developmen­t of obsessive-compulsive disorder and other mental illnesses in children. ◆ Brain defects or injury: Defects in or injury to certain areas of the brain as a result of say road traffic accidents, concussion have also been linked to the likelihood of some mental illnesses. ◆ Prenatal damage: Some evidence suggests that a disruption of early fetal brain developmen­t or trauma that occurs at the time of birth for example, loss of oxygen to the brain, may be a factor in the developmen­t of certain conditions, such as autism spectrum disorder, epilepsy and schizophre­nia. ◆ Substance abuse: Long-term substance abuse, in particular, has been linked to anxiety, depression, and psychosis. This has become a huge problem among the youths with the use of cough mixtures like Brocho (street name), heavy use of high grade cannabis, cocaine and elicit high concentrat­ed alcohols. ◆ Other factors: Poor nutrition and exposure to toxins, such as lead, may play a role in the developmen­t of mental illnesses. Psychologi­cal factors contribute to mental illness. Several studies have shown that children are a vulnerable group and most mental illness that then come up even in adult life are as a result of psychologi­cal trauma early on in life. Some studies quote the age of below age of 11years as high-risk group. Now psychologi­cal include: ◆ Severe psychologi­cal trauma suffered as a child, such as emotional, physical, or sexual abuse ◆ An important early loss, such as the loss of a parent ◆ Neglect ◆ Poor ability to relate to others Environmen­tal factors that contribute to mental illness can be certain stressors can trigger an illness in a person who is susceptibl­e to mental illness. These stressors include: ◆ Death or divorce ◆ A dysfunctio­nal, stressful family life or marriage ◆ Feelings of inadequacy, low self-esteem, anxiety, anger, or loneliness ◆ Changing jobs or schools or even migrating ◆ Social or cultural expectatio­ns. For example, a society that associates beauty with thinness can be a factor in the developmen­t of eating disorders. ◆ Substance abuse by the person or the person’s parents ◆ Rape and other sexual abuse ◆ Work environmen­t difficulty This is just a summary of causes of mental health illness and not an exhaustive list. I will hasten to say that these causes are recognised in all cultures and races not limited to African ( CHIBHOYI) in the common Shona vernacular tone. It is my sincere belief that this background informatio­n explains why mental health occurs and that most of the conditions now have treatment protocols that is aimed to help such individual­s.

Next week we look at Depression the commonest mental condition.

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Myths about mental illness
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