Scientists Identify Hidden Brain Nutrient Deficit Potentially Linked to Anxiety Disorders

Anxiety may leave a chemical fingerprint inside the brain, and scientists say one essential nutrient could be part of the story. New research from UC Davis Health has found that people with anxiety disorders consistently show lower levels of choline, a nutrient critical for memory, mood regulation, and nerve signaling.

The study, published in the journal Molecular Psychiatry, analyzed brain chemistry data from 25 earlier studies involving more than 700 participants. Researchers discovered that people diagnosed with anxiety disorders had roughly 8% lower levels of choline in key brain regions compared to individuals without anxiety.

The strongest difference appeared in the prefrontal cortex, an area involved in emotional regulation, decision-making, and stress control. Scientists say this is the first large meta-analysis to identify such a consistent chemical pattern across different anxiety disorders, including generalized anxiety disorder, panic disorder, social anxiety, and phobias.

Choline is an essential nutrient the body uses to build cell membranes and support brain communication. While the liver produces small amounts naturally, most choline must come from food sources such as eggs, fish, milk, chicken, soybeans, and beef.

Researchers believe chronic “fight-or-flight” activity may increase the brain’s demand for choline. Over time, the brain may struggle to maintain adequate levels, particularly in areas heavily involved in stress processing. Scientists also observed changes in another brain chemical called NAA, linked to neuron health, although the clearest finding remained reduced choline levels.

The study does not prove that low choline intake causes anxiety or that supplements can treat it. Researchers stress that more clinical trials are needed before recommending choline supplementation for anxiety disorders.

Scientists say the research opens a promising new direction for understanding anxiety biology and exploring whether diet could eventually support traditional mental health treatments alongside therapy and medication.

REFERENCE: Richard J. Maddock, Jason Smucny. Transdiagnostic reduction in cortical choline-containing compounds in anxiety disorders: a 1H-magnetic resonance spectroscopy meta-analysis. Molecular Psychiatry, 2025; 30 (12): 6020 DOI: 10.1038/s41380-025-03206-7