Nutraceutical Therapies in Major Depressive Disorder
Summary
Major depressive disorder (MDD) remains a formidable global health challenge, with standard pharmacological and psychological treatments proving inadequate for a substantial subset of patients. Nutraceuticals—bioactive compounds derived from foods—have gained increasing attention for their potential to modulate neurobiological pathways implicated in depression. These agents encompass vitamins (notably folate and vitamin D), minerals (such as magnesium and zinc), essential fatty acids (particularly omega-3s), amino acids (for example S-adenosylmethionine and N-acetylcysteine) and coenzyme Q10. Mechanistic insights point to effects on one-carbon metabolism, monoamine synthesis, neuroinflammation, oxidative stress and gut–brain axis interactions. In clinical practice, nutraceuticals have been investigated both as monotherapies and as adjuncts to conventional antidepressants, with emerging evidence supporting symptom reduction in selected patient groups. The affordability, favourable safety profiles and global availability of many nutraceuticals render them attractive candidates for integrative treatment strategies. Future directions include refinement of dosing regimens, identification of predictive biomarkers and rigorous long-term safety assessments to optimise individualised care.
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Nutraceutical Therapies in Major Depressive Disorder publication trend
The graph below shows the total number of articles in nutraceutical therapies in major depressive disorder across all publications each year (not limited to Nature Index journals).
Technical terms
Nutraceuticals: Bioactive compounds derived from foods that confer health benefits beyond basic nutritional value, often used for disease prevention or therapy.
One-carbon cycle: A network of biochemical reactions involving folate and methyl group transfers essential for DNA synthesis, methylation and neurotransmitter production.
L-methylfolate: The metabolically active form of folate that penetrates the blood–brain barrier to support synthesis of serotonin, dopamine and norepinephrine.
S-Adenosylmethionine (SAMe): A naturally occurring methyl donor involved in the synthesis of monoamine neurotransmitters and epigenetic regulation, with demonstrated antidepressant effects.
Brain-derived neurotrophic factor (BDNF): A neurotrophin critical for neuronal survival, growth and synaptic plasticity, often found at reduced levels in MDD.
References
- Folate and Its Significance in Depressive Disorders and Suicidality: A Comprehensive Narrative Review. Nutrients (2023).
- Folate supplementation as a beneficial add‐on treatment in relieving depressive symptoms: A meta‐analysis of meta‐analyses. Food Science & Nutrition (2024).
- Impact of Supplementation and Nutritional Interventions on Pathogenic Processes of Mood Disorders: A Review of the Evidence. Nutrients (2021).
- Exploring the Role of Nutraceuticals in Major Depressive Disorder (MDD): Rationale, State of the Art and Future Prospects. Pharmaceuticals (2021).
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