Possible Causes of Mental Disorders

mental issuesMental illness has etiologies that are mostly multifactorial. They involve a complex interaction between environmental, Biological and Psychological factors.  Some risk factors have been implicated in the development of mental disorders, but mental illness is unique to individuals and patients, a precise cause can be identified on a person if the symptoms manifest. Below are some of the varied causes of mental disorder.

Biological factors.

Some mental disorders are as a result of the abnormal balance of particular chemicals in the brain known as neurotransmitters.  The chemicals help nerve cells in the brain to communicate with each other. However, if these neurotransmitters are out of whack or are not working properly, messages may not be interpreted through the brain correctly, leading to symptoms of mental illness. Besides, defects in or injury to certain areas of the brain have also been linked to some mental conditions.


Most mental illness problems run in families, a clear suggestion that they may be passed on from parents to children through genes. Many mental disorders are hypothesized to be caused by multiple genetic abnormalities.

Chemical imbalance

Certain mental problems are associated with chemicals imbalances in the neurotransmitters in the brain. Neurotransmitters serve as a communication system between the nerve cells in the brain. If these chemicals are working in a substandard manner or they are whack, there will be an interruption the brain as it attempts to process incoming messages. Hence the result is a display of mental illness.

Brain injuries and Infection

brain injuryDefects or injuries in particular parts of the brain have causes mental conditions. Certain infections damage the brain thus they result into a mental disorder. Streptococcus bacteria causes obsessive compulsion disorder and other mental problems in children.

Poor Nutrition and prenatal costs

Autism as one of the mental illness is caused by loss of oxygen to the brain during childbirth. Additionally, during the fetal stages, when the mother of the unborn baby is into substance abuse, it may result in damages to the fetus especially the brain tissues. Additionally, exposure to toxins and poor nutrition’s leads to mental illness. Lead poisoning and B12 deficiency results are some of the common causes of mental illness.

Psychological factors.

Some mental health illness may be triggered by psychological trauma suffered as a child. Some of the psychological factors that can contribute to mental illness include:


When people feel ignored in their life, they become depressed and as a time goes, they develop a negative attitude towards life and the most times they think of committing suicide.

Loss of a parent

Reduced ability to relate to others

Sexual, physical and emotional abuse

Environmental factors

The environment in which someone lives and functions can cause some mental illness. The environmental factors are considered to be external factors. They include;

 Economic hardships or dysfunctional family life: Maintaining good family ties promote whole being of a person.


Divorce or death

 Low self-esteem, loneliness, anger or anxiety: Low self-esteem and loneliness are as a result of withdrawal from certain activities in life. Majorly they constitute the bigger percentage of mental illness if not well checked in time.

Cultural or social expectations.

Substance abuse

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