What Causes Mental Illness in Adolescence

Although it is often assumed that young people are more carefree than adults, their lives are full of emotional ups and downs. This is hugely evident in the statistics regarding adolescent and teen mental health, with as many as one out of every five adolescents and teenagers meeting the criteria for a diagnosable mental illness. Additionally, 50% of all lifetime cases of mental illness will develop by age 14 and 75% by age 24, highlighting the importance of early recognition and treatment. The most common adolescent mental health issues fall into the categories of anxiety disorders, stress-related disorders, mood disorders, obsessive-compulsive disorders, eating disorders, and disruptive-behavioral disorders (i.e., attention-deficit/hyperactivity disorder or oppositional defiant disorder).

While almost all adolescents and teens will experience periods of moodiness, crankiness, and/or angst, there are certain indicators that could demonstrate the presence of a more serious issue, including:

• Becoming socially withdrawn
• Pervasive moodiness lasting more than a few days
• Dramatic changes in eating habits (including changes in weight)
• Ongoing anger, irritability, or hopelessness

If your adolescent or teenager is demonstrating any signs of a more serious issue, they may need residential mental health treatment. This is especially true if there are certain factors that may make him or her more susceptible to a mental illness.

Understanding the Causes of Teen Mental Illness

Adolescence is a critical period of rapid change, growth, and exploration. During this stage, teenagers face unique challenges and pressures that can significantly impact their mental health. From academic stress to social dynamics, the teenage years are often a whirlwind of emotions and experiences. Mental health is a significant concern for teenagers, with many experiencing teen anxiety, teen depression, and other mental health issues. Understanding mental health in adolescence is crucial for early intervention and support.

Teen mental health is influenced by a combination of genetic, environmental, and social factors. Teenagers who experience mental health issues are more likely to face academic difficulties, social isolation, and decreased self-esteem. These mental health challenges can have long-term consequences, including decreased life satisfaction, an increased risk of substance abuse, and poor physical health. By recognizing and addressing mental health issues early, we can help teenagers navigate this tumultuous period and set the foundation for a healthier future.

Biological Risk Factors for Teen Mental Illness

Biological factors refer to anything physical that can cause an adverse effect on a person’s mental health, and mental illness has a long history of biologically based evidence. This is not surprising, as realistically, all human behavior is triggered by brain activity. Thus, it is understandable that sadness, fear, etc. originate in the brain. In the same regard, many mental health disorders have been linked to an abnormal balance of chemicals (neurotransmitters) in the brain. Neurotransmitters are what help nerve cells communicate with one another, and, if out of balance, may cause messages to not be delivered properly, thus leading to symptoms of mental illness. Other biological factors considered as possible contributing factors to mental illness include:

Biological factors significantly impact youth mental health, especially during the critical developmental stages of adolescence.

Genetics

Genetic factors have been shown to play a significant role in the development of mental disorders in adolescents (and in general). There are three major ways in which genetics contribute to mental illness:

• Genes govern organic changes or abnormalities in the brain, which can predispose an adolescent to diagnoses such as schizophrenia and Alzheimer’s disease.
• Genes can be responsible for abnormalities in an adolescent’s development (before or after birth). This means mental disorders develop as a result of chromosomal mutations or deletions.
• Genes may influence one’s susceptibility (or vulnerability) to depression, anxiety, personality, and/or substance abuse disorders. Children and adolescents who have a first-degree relative with mental illness (i.e. – depression, anxiety, PTSD) are at a higher risk for the development of their own mental health disorder(s).

It is crucial for adolescents with genetic predispositions to mental disorders to consult a mental health care professional for proper assessment and treatment.

Brain injury

Any injury to the brain can cause mental illness in a person, as the brain is the control center for the nervous system and the entire body. Many studies show higher rates of substance abuse, mood, and psychotic disorders following a traumatic brain injury. Head trauma can cause injury to the brain, as well as brain tumors.

Infection or Disease

Although this tends to be the area most mysterious in terms of causes of mental illness, some studies have linked mental illness to certain viruses or infectious diseases. Additional research regarding the connection between infectious disease and mental health disorders is needed to continue to shed light on the phenomena of viruses, diseases, and infections manifesting as mental illness.

Prenatal Damage

Any harm or injury that occurs to a fetus while in the mother’s womb is considered prenatal damage. Prenatal damage is, in some cases, a strong contributing factor to the likelihood an adolescent or teenager will develop a mental illness. Prenatal damage can occur if the pregnant mother uses drugs and/or alcohol or is exposed to certain infections or illnesses during pregnancy. Prenatal damage can also occur if the pregnant mother is under significant stress or experiences trauma during pregnancy. Additionally, there have been instances of prenatal damage due to loss of oxygen to the brain (often connected to the development of autism) or a difficult (traumatic) birth process.

Teen Substance abuse and mental health

Any substance abuse, especially long-term use and abuse, can cause the development of mental illness in adolescents. Substance abuse can also contribute to increased symptomology in pre-existing mental illness. Many studies indicate a strong correlation between alcohol abuse and depression, while others show a connection between the abuse of amphetamines and anxiety disorders. Even caffeine abuse over a long period of time has been shown to contribute to the development of anxiety.

Environmental Factors

Unlike psychological or biological causes, environmental causes tend to be difficulties or stressors that adolescents deal with daily. Environmental causes are psychologically based but tend to be pervasive in a person’s life (sustained for longer periods of time). Environmental causes of mental illness in adolescents are typically, at their core, a result of stress. Environmental stressors significantly impact youth mental health, contributing to various mental health struggles among teens.

Common sources of stress in adolescence are social stress, isolation, or substance abuse. Other common sources of stress include:

• Trauma – emotional, sexual, or physical abuse
• Bullying
• Demands at school or work
• Unstable or dysfunctional home environment – for example, domestic violence in the home.
• Early loss – such as the loss of a parent or sibling
• Unsafe living conditions
• Obesity
• Chronic illness
• Natural disaster
• Car accident
• Acts of violence – such as school shootings
• Witness another person experience a traumatic event
• Cultural or social expectations – societies that value beauty connected to thinness can be a factor in the development of eating disorders
• Feelings of inadequacy – low self-esteem, anger, anxiety, and/or loneliness

Indicators of stress overload in adolescents may include frequent illness, withdrawal from friends, family, and/or activities, changes in eating and sleeping habits, anger/irritability, and expressing hopelessness.

Common Mental Health Disorders in Adolescence

Common mental health disorders in adolescence include anxiety disorders, mood disorders, attention-deficit/hyperactivity disorder (ADHD), and teen eating disorders. Anxiety disorders, such as generalized anxiety disorder and social anxiety disorder, are characterized by excessive anxiety and worry that can interfere with daily activities. Mood disorders, such as major depressive disorder and bipolar disorder, involve persistent feelings of sadness or irritability that can affect a teenager’s overall well-being.

ADHD is a neurodevelopmental disorder marked by symptoms of inattention, hyperactivity, and impulsivity, which can impact academic performance and social interactions. Eating disorders, such as anorexia nervosa and bulimia nervosa, involve abnormal eating habits and body image concerns that can have severe physical and emotional consequences. Early recognition and treatment of these common mental health disorders are essential for improving mental health outcomes and helping teenagers lead fulfilling lives.

The Role of Social Media on Mental Health

Social media can have both positive and negative effects on mental health. On the one hand, social media can provide a sense of connection and community, which can be beneficial for mental health. It allows teenagers to stay in touch with friends, share experiences, and find support from like-minded individuals. On the other hand, excessive social media use can contribute to feelings of anxiety, depression, and low self-esteem. The constant comparison to others, cyberbullying, online harassment, and exposure to unrealistic beauty standards can negatively impact mental health.

Parents and caregivers can play a crucial role in monitoring and regulating their teenager’s technology use to support their mental health. Encouraging balanced and mindful use of social media, setting boundaries, and fostering open communication about online experiences can help mitigate the negative effects and promote a healthier relationship with technology.

Seeking Help and Support

Seeking help and support is essential for addressing mental health issues. Teenagers can seek help from mental health care professionals, such as therapists and counselors, who can provide specialized support and treatment. Primary care physicians can also play a role in identifying and managing mental health conditions. School counselors and mental health services offer accessible resources within the educational environment, while online resources and support groups can provide additional avenues for help.

Parents and caregivers can also seek help and support by consulting with mental health care professionals and seeking online resources and information. Advocating for mental health services and support in their community is another important step. Mental health is a key part of human health, and seeking help and support is a sign of strength, not weakness. By taking proactive steps, we can ensure that teenagers receive the care and support they need to navigate their mental health challenges.

It is important, as a parent or caregiver, to be aware of what is going on with your child, not only behaviorally but also emotionally. Everyone is different and is affected by stress, life experiences, and emotions in different ways, but with the prevalence of mental illness in adolescents and teens, there is a chance your child may be affected.

For more information on Polaris Teen Center or to learn about our mental health programs, contact our admissions team at (844) 708-5048 today.