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Neck Circumference and Cerebral Gray Matter Volume.

Chol Shin1, Regina E Y Kim1, Robert J Thomas2,3

  • 1Institute of Human Genomic Study, Korea University College of Medicine, Ansan-si.

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Increased neck circumference (NC) is linked to reduced gray matter brain volume in men with diabetes. This finding suggests neck adiposity may impact brain aging, particularly in diabetic populations.

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Area of Science:

  • Neuroscience
  • Metabolic Health
  • Medical Imaging

Background:

  • Obesity is associated with brain atrophy and dementia.
  • Regional adiposity's link to brain structure remains unclear.
  • Neck circumference (NC) is a marker for regional adiposity with metabolic and cardiovascular implications.

Purpose of the Study:

  • To investigate the association between neck circumference and cerebral gray matter volume.
  • To determine if regional adiposity, measured by NC, relates to brain structure.

Main Methods:

  • Cross-sectional study of 2916 participants from the Korean Genome and Epidemiology Study (2011-2014).
  • Magnetic resonance imaging (MRI) used to assess cerebral gray matter volume.
  • Neck circumference measured as a proxy for regional adiposity.

Main Results:

  • In men, higher NC was inversely associated with total and regional gray matter volume (frontal, temporal, occipital lobes).
  • This association was stronger in men with diabetes.
  • Diabetic men showed a significant reduction in total and frontal gray matter volume with increasing NC.

Conclusions:

  • Neck circumference is inversely associated with cerebral gray matter volume in men with diabetes.
  • Neck adiposity may play a role in brain aging among diabetic men.
  • Further research is warranted on the link between neck anthropometry and brain health in this population.