Choline Deficiency in the Brain and Anxiety: New Evidence 2026
17.05.2026Imagine a common nutrient we get every day from eggs or fish suddenly being the key to peace of mind. Research shows that people with anxiety disorders have significantly lower levels of choline in their brains, a discovery that opens up new horizons for understanding mental health.
In May 2026, the scientific community continues to debate the results of a meta-analysis published in the journal Molecular Psychiatry. Researchers from UC Davis Health found a consistent pattern: patients with anxiety disorders have 8% lower levels of choline in the prefrontal cortex of the brain than healthy people. This number, although seemingly small, has significant implications for neuronal function, memory, and emotion regulation.
Choline: the invisible support of the nervous system
Choline is an essential nutrient that is involved in the formation of cell membranes, the synthesis of acetylcholine, and the maintenance of brain signaling pathways. The human body is able to synthesize only small amounts of it, so the main intake comes from food. Rich sources include egg yolks, beef liver, salmon, chicken, soy, and milk. According to the National Institutes of Health, most adults in the United States do not reach the recommended daily allowance of 550 mg for men and 425 mg for women.
In 2024, a group of European scientists from the University of Oslo published additional data supporting the link between low choline levels and increased activity in the amygdala, an area of the brain responsible for the perception of threat. The study, conducted on 180 volunteers, found that participants with the lowest choline levels showed a 23% greater response to stressful stimuli during functional MRI scans.
UC Davis Meta-Analysis: How it all began
The 2023 study that formed the basis of the current discussion included 25 previous studies and 712 participants. In 370 people with diagnosed anxiety disorders — generalized anxiety, panic attacks, social phobia — there was a consistently low level of choline. This was especially evident in the prefrontal cortex, which is responsible for decision-making and inhibition of emotional impulses.
Professor Richard Maddock, senior author of the paper, said in a commentary for the journal Nature in February 2026: “Chronic activation of the ‘fight or flight’ response increases the brain’s need for choline. When stores are depleted, the balance of neurotransmitters is disrupted.” His colleague Jason Smukny added that an 8% deficit may seem insignificant, but in conditions of constant stress it leads to a noticeable deterioration in cognitive function.
New research 2025–2026
In March 2025, Japanese scientists from Kyoto University published the results of a pilot study in which 64 patients with generalized anxiety disorder were given choline supplements for 12 weeks. Anxiety levels on the GAD-7 scale decreased by an average of 31%. Although the sample size was small, the effect was statistically significant. In May 2026, a larger randomized trial involving 420 people began in Australia, with results expected by the end of the year.
In parallel, in Ukraine, the Institute of Psychology of the National Academy of Sciences of Ukraine conducted a survey of 1200 respondents, which showed that only 18% of adults regularly consume foods rich in choline. Among people with high levels of anxiety, this figure was even lower - 11%. Researchers attribute this to eating habits and limited access to quality protein sources in conditions of economic instability.
Nutrition as part of therapy
Experts emphasize: choline supplements are not a panacea and do not replace psychotherapy or drug treatment. However, proper nutrition can be an important addition. Salmon, eggs and soy products not only provide choline, but also omega-3 fatty acids, which improve the permeability of the blood-brain barrier. The 2025 recommendations of the American Psychiatric Association included a point on monitoring the nutritional status of patients with anxiety disorders.
It's important to remember safety: excessive choline intake (more than 3,5 grams per day) can cause side effects, from nausea to changes in blood pressure. Therefore, any changes to your diet should be discussed with your doctor.
The future of research
Scientists are currently focused on developing noninvasive methods to accurately measure choline in real time. In 2026, the University of California is testing a new version of spectroscopy that will track the dynamics of the substance throughout the day. This could be a breakthrough in personalized mental health medicine.
Thus, the connection between choline levels and anxiety disorders ceases to be a hypothesis and becomes a specific direction of scientific research. Anyone who cares about mental health can pay attention to their diet today - without risk and with potential benefits for the brain.
Sources
- Molecular Psychiatry, 2023. Meta-analysis of choline levels in anxiety disorders.
- UC Davis Health press release, February 2026.
- University of Oslo study, European Journal of Neuroscience, 2024.
- Kyoto University pilot trial, Journal of Affective Disorders, 2025.
- National Institute of Health dietary guidelines update, 2025.
- Institute of Psychology of the National Academy of Sciences of Ukraine, report for 2025.
- American Psychiatric Association practice guidelines, 2025.
