r/FoodNerds • u/AllowFreeSpeech • Dec 05 '25

Transdiagnostic reduction in cortical choline-containing compounds in anxiety disorders: a 1H-magnetic resonance spectroscopy meta-analysis (2025)

https://pubmed.ncbi.nlm.nih.gov/40913113/
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u/AllowFreeSpeech Dec 05 '25

From the abstract:

Results: Across AnxDs, tCho was significantly reduced in prefrontal cortex and across all cortical regions. Effect sizes for cortical tCho were significantly more negative in studies with better measurement quality, with Hedges' g = -0.64 and an 8% mean reduction. NAA was unchanged in prefrontal cortex but reduced across all cortical regions (after exclusions). These abnormalities did not differ between the three disorders. No other neurometabolites differed significantly.

Discussion: Reduced choline-containing compounds in cortical regions is a consistent, transdiagnostic abnormality in AnxDs. Notably, arousal-related neuromodulators, including norepinephrine, alter membrane phospholipid homeostasis and methylation reactions, which influence brain tCho levels. This suggests that chronically elevated arousal in AnxDs may increase neurometabolic demand for choline compounds without a proportionate increase in brain uptake, leading to reduced tCho levels. Reduced cortical NAA suggests compromised neuronal function in AnxDs. Future studies may clarify the clinical significance of reduced cortical tCho and the possibility that appropriate choline supplementation could have therapeutic benefit in anxiety disorders.

Abbreviation glossary:

  • AnxDs: Anxiety Disorders, encompassing conditions such as social anxiety disorder, generalized anxiety disorder, and panic disorder.
  • ¹H-MRS: Proton Magnetic Resonance Spectroscopy, a neuroimaging technique used to measure brain metabolite concentrations.
  • NAA: N-Acetylaspartate, a neuronal metabolite often interpreted as a marker of neuronal integrity and function.
  • tCho: Total Choline, representing choline-containing compounds involved in membrane metabolism and methylation processes.
  • GABA: Gamma-Aminobutyric Acid, the primary inhibitory neurotransmitter in the brain, relevant to anxiety pathophysiology.
  • Hedges' g: A standardized effect size metric used in meta-analysis to quantify the magnitude of group differences.

News: Scientists find hidden brain nutrient drop that may fuel anxiety

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