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Case study: melatonin in severe obesity

M Shafii1, D R MacMillan, M P Key

  • 1Department of Psychiatry and Behavioral Sciences, University of Louisville School of Medicine, KY, USA.

Journal of the American Academy of Child and Adolescent Psychiatry
|March 1, 1997
PubMed
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This study observed altered nocturnal melatonin patterns in a severely obese adolescent. Findings suggest a potential link between pineal gland dysregulation and severe obesity.

Area of Science:

  • Endocrinology
  • Chronobiology
  • Metabolic Disorders

Background:

  • Melatonin, a hormone produced by the pineal gland, regulates sleep-wake cycles.
  • Obesity is a complex metabolic disorder with multifactorial causes.
  • Disruptions in circadian rhythms have been implicated in metabolic dysfunction.

Observation:

  • Nocturnal serum melatonin levels were measured in two sisters, one severely obese and one overweight.
  • Measurements were taken at half-hour intervals from evening to morning.
  • Both individuals were otherwise healthy physically and psychiatrically.

Findings:

  • The severely obese sister exhibited elevated mean serum melatonin levels.
  • A delayed phase-shift and a delayed peak in melatonin secretion were observed.

Related Experiment Videos

  • Higher overnight urinary excretion of melatonin and its metabolite, 6-hydroxymelatonin sulfate, were noted.

    • Implications:

    • These findings suggest a potential dysregulation of the pineal gland in severe obesity.
    • Further research is warranted to explore the relationship between melatonin pathways and obesity.
    • Understanding these connections could inform novel therapeutic strategies for obesity management.