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A groundbreaking study published in JAMA Network Open suggests that being an early riser could increase the risk of developing anorexia nervosa, a severe eating disorder marked by low body weight, food restriction, body image disturbance, and an intense fear of gaining weight.
The study, conducted by an international team of researchers and led by Massachusetts General Hospital (MGH), explored the genetic associations between anorexia nervosa and morning chronotype—characterized by waking up early and going to bed early. The findings revealed a two-way genetic link between anorexia nervosa and early rising, distinguishing it from other psychiatric and eating disorders such as depression, binge eating disorder, and schizophrenia, which typically align with evening-based chronotypes.
Moreover, the study found a notable connection between anorexia nervosa and insomnia. Researchers further examined this link by developing a “genetic risk score” for anorexia nervosa. The results indicated that individuals with a higher genetic predisposition for anorexia nervosa were also at an increased risk of experiencing insomnia.
These findings provide valuable insights into the biological underpinnings of anorexia nervosa and highlight the need for further research to understand the relationship between sleep patterns and eating disorders. Experts suggest that addressing sleep disturbances in individuals at risk for anorexia nervosa could be an essential component of early intervention and treatment strategies.
Disclaimer: The information presented in this article is based on scientific research and is intended for informational purposes only. It should not be used as a substitute for professional medical advice, diagnosis, or treatment. If you or someone you know is struggling with an eating disorder or mental health issue, please seek guidance from a qualified healthcare professional.
