In a world where feelings of anxiousness and troubled sleep, along with a higher incidence of upper respiratory insufficiency, have never seemed more prevalent, the quest for natural solutions to address these concerns has become more common.
Approximately 30% of adults today struggle with anxiety disorders, according to psychiatrist Richard Maddock, MD, senior author of a new systematic review that identified low choline levels as a potential common denominator. Maddock and his team found that individuals with anxiety disorders consistently exhibit lower choline levels in the brain regions that regulate thinking and emotions compared to those without anxiety issues. This choline insufficiency, they state, may help explain why the brain reacts more intensely to stress in anxiety conditions.
The team analyzed 25 studies to compare neurometabolite levels in 370 individuals with anxiety disorders and 342 individuals without anxiety. Their analysis showed that levels of the essential nutrient choline were approximately 8% lower in those with anxiety disorders, specifically seen in the prefrontal cortex, the brain region involved in thinking, emotional regulation, and decision-making.
“This is the first meta-analysis to show a chemical pattern in the brain in anxiety disorders,” said co-author Jason Smucny, PhD. “It suggests nutritional approaches like appropriate choline supplementation may help restore brain chemistry and improve outcomes for patients.”
Anxiety is often described as a strong intolerance to uncertainty, and the researchers believe that intensified “fight-or-flight” activity characteristic of anxiety disorders may increase the brain’s demand for choline, thereby reducing available levels.
Choline is abundant in egg yolks, chicken, fish, beef, milk, and soybeans. The authors suggest that individuals experiencing anxiety ensure they consume more of these foods to increase their choline levels.
Anxiety & Insomnia Reduce Immune Efficacy
Numerous studies have explored the bidirectional association between anxiety and sleep disorders. A 2024 systematic review, characterized this relationship as a “complex link,” describing recent research that suggests anxiety disorders can lead to disturbed sleep, while poor sleep (insomnia) can also contribute to the development and/or exacerbation of anxiety disorders. Further, an earlier meta-analysis found that insomnia increases the risk of anxiety and other psychopathologies.
According to a new study, researchers found that anxiety and insomnia are linked to significant reductions in immune cells, specifically natural killer (NK) cells. As both conditions become more common, especially among younger populations, a team of researchers examined how anxiety and poor sleep affect NK cells in young female students. NK cells play a critical role in neutralizing foreign, potentially pathogenic microbes as well as identifying and eliminating damaged or infected cells. Insufficient NK cell levels increase the risk of microbial infections and other illnesses.
In the study, 60 female students aged 17 to 23 completed questionnaires assessing symptoms related to anxiety and insomnia. Approximately 53% experienced sleep difficulties consistent with insomnia, while 75% reported anxiety symptoms, with about 17% and 13% falling into the moderate and severe categories, respectively.
Researchers also collected blood samples to measure different NK cell subtypes. Results showed that participants who reported anxiety symptoms had both a lower percentage and a lower absolute number of circulatory NK cells and their subtypes compared to those without symptoms. Further, the severity of anxiety was significant: participants with moderate or severe anxiety showed a notably reduced percentage of circulatory NK cells, while those with minimal or mild symptoms showed only a small and statistically insignificant decrease. Among students with insomnia symptoms, higher anxiety scores were associated with a lower proportion of total peripheral NK cells.
3 Supplements to Consider
Clearly, the cycle of anxiety, insomnia, and impaired immune function affects a significant portion of the population. This underscores a growing need for tools such as supplements that are non-invasive, relatively inexpensive, safe, and effective in providing relief and restoring balance.
Ashwagandha, melatonin, and vitamin C, three popular supplements widely recognized by consumers, have been shown to support resilience and overall health, and may be considered as valuable tools for those who experience bouts of anxiety and sleeplessness.
Prolanza™ is Nutriventia’s science-backed root-only ashwagandha extract, demonstrated to be clinically effective at once-daily doses of both 150 mg and 300 mg. It delivers dose-dependent benefits for stress, mood, memory, sleep, and eating behavior. Developed using Nutriventia’s pharmaceutical-grade delivery platform, Prolanza™ ensures sustained release of withanolides over 24 hours, providing all-day support.
Melotime™ delivers a steady release of melatonin over approximately 8 hours, aligning with the body’s natural sleep cycle. This gradual release is designed to help users fall asleep faster and maintain restful sleep throughout the night without the need for repeated dosing. One of its key distinctions from marketed melatonin ingredients is its formulation versatility. An open-label, crossover pharmacokinetic study demonstrated that Melotime™ delivers optimized peak plasma concentrations and a 5-fold extended half-life compared to immediate-release melatonin. This translates to improved sleep onset and more stable, sustained sleep maintenance without repeated dosing.
Previous research has shown that vitamin C accelerates the proliferation of NK cells, and Nutriventia’s C-Fence™ provides consumers with a vitamin C solution that protects immune function throughout the day with just a single dose.
A pharmacokinetic study found that participants who consumed a single 500 mg dose of C-Fence™ maintained vitamin C levels well above baseline values for the entire 24-hour study duration,with maximum plasma levels achieved in approximately 4.5 hours, nearly double that of immediate-release formulations.
Conclusion
Global turmoil has affected billions of people worldwide, contributing to a marked increase in anxiety, sleeplessness, and stress. A 2024 poll by the American Psychiatric Association found that 43% of U.S. adults reported feeling more anxious than in the previous year, up from 37% in 2023 and 32% in 2022.
In this context, supplements that gently alleviate anxiety, improve sleep onset and quality, and support immune function have never been more relevant.
Reviewed by Sneha Sawant Desai, PhD
