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Molly Perlman, MD – Neurobiology and Genetics

Part 1 of 2: A Discussion During Mental Health Awareness Month

Medical Director Molly Perlman, MD, MPH, CEDS

It is an exciting time in the world of brain and mental health research. Over the past few years, there has been an exponential increase in research findings in the neurobiology and genetics of mental health disorders. While we have known for decades that mental disorders are related to dysfunction in brain pathways, we are now able to say that mental illnesses are brain diseases.

Most diseases develop, progress and/or resolve due to a number of factors including biology, genetics, psychological co-morbidities and environmental exposures. Like most diseases, eating disorders typically occur in individuals with a genetic predisposition, meaning they are born with genes inherited from their parents, which are associated with eating disorders. Data shows that 50 to 80 percent of the risk of developing an eating disorder is related to genetics. Clinically, we know this. It is very common for my patients to tell me they have family members with eating disorder histories. In fact, first degree relatives of patients with eating disorders are over eleven times more likely to have anorexia nervosa compared to controls. There are over forty genes involved in the regulation of eating disorder behaviors, motivation, reward, personality traits and emotions. The relationship between the genes and environment is complex. These genes may be turned on or off by environmental triggers. Of course, environment (exposure to social media that over-emphasize image, involvement in certain activities like dance, modeling or wrestling, etc.) can play a significant role in the development of an eating disorder.

Certain temperaments are associated with the development of eating disorders. While specific genes have not yet been identified with temperament, we do know that temperament traits are often constant throughout life, before, during and after experiencing an eating disorder. The temperament traits commonly seen in individuals with eating disorders include harm avoidance, perfectionism, neuroticism, compulsivity, dysphoric mood, low self-directedness, impulsivity, sensation seeking, lack of planning and lack of persistence. Individuals with eating disorders may experience one or more of these temperament traits throughout life, while the eating disorder symptoms often change over time. It can be helpful to address the management of temperament traits in therapy.

At Monte Nido & Affiliates, psychiatric care is provided by board-certified psychiatrists who perform initial psychiatric evaluations upon admission and follow each client throughout their stay. Weekly sessions with the psychiatrist ensure proper medication management to treat eating disorder symptoms and co-morbid issues, such as mood, anxiety and trauma. In addition, the psychiatrists are available 24/7 and are on call for emergencies. The therapists, dietitians, nurses and doctors work closely together so we are able to offer the most comprehensive, compassionate care at every Monte Nido program.