Magnesium2026

Multisystem pathology in chronic variable stress: gut-liver-brain axis disruption and the therapeutic promise of magnesium-L-theanine.

Sahin Kazim, Erek Gozde — Therapeutic advances in endocrinology and metabolism

Summary

This paper explores how long-term, unpredictable stress can harm various body systems, including the gut, liver, and brain. It highlights that a specific combination of magnesium and L-theanine, a compound found in green tea, shows potential in laboratory studies to protect against these widespread negative effects of chronic stress. This suggests a possible role for this combination in supporting overall health under stressful conditions.

AI-generated summary — read the original

Key points

Chronic stress can negatively impact multiple body systems, including the gut, liver, and brain.
This review suggests that magnesium, combined with L-theanine, may help protect against these widespread effects of stress.
Preclinical studies indicate this combination could improve gut health, reduce liver damage, and support metabolic balance under stress.
Further research is needed to confirm these benefits in humans.

What the study looked at

This review paper investigated how long-term, unpredictable stress impacts various body systems, particularly focusing on the interconnectedness of the gut, liver, and brain. It also explored whether a specific combination of magnesium and L-theanine could offer a protective or therapeutic benefit against these stress-induced problems. This was a review paper, meaning it synthesized and interpreted existing research, primarily preclinical (laboratory and animal) studies, on chronic variable stress and the effects of magnesium-L-theanine. It did not involve new human participants or experiments but rather analyzed findings from previous studies to draw conclusions and identify future research directions. The review found that chronic stress can disrupt the gut-liver-brain axis, leading to issues like impaired gut barrier function, liver fat accumulation, and metabolic imbalances. Preclinical evidence suggests that magnesium-L-theanine may help counteract these effects by improving gut integrity, reducing liver damage, and restoring metabolic pathways. The paper highlights this combination as a promising strategy to mitigate stress-related gastrointestinal, metabolic, and neurological complications.

Dietary takeaway

While this review highlights the potential benefits of magnesium in combination with L-theanine for stress-related health issues, it's important to remember that much of the evidence comes from preclinical studies. To support overall well-being, consider incorporating magnesium-rich foods like leafy greens, nuts, seeds, whole grains, and legumes into your daily diet. Remember that individual studies provide valuable insights, but more human research is needed before making definitive dietary recommendations or relying solely on supplements for managing chronic stress.

Abstract

Chronic variable stress (CVS) is a well-established translational model that captures the unpredictability, persistence, and cumulative burden of long-term stress exposure. Through repeated application of heterogeneous mild-to-moderate stressors in a non-habituating manner, CVS induces sustained activation of the hypothalamic-pituitary-adrenal (HPA) axis, chronic glucocorticoid excess, oxidative stress, and neuroinflammatory signaling. These processes collectively drive coordinated dysfunction across multiple organ systems. Accumulating evidence now indicates that CVS pathology extends beyond the central nervous system (CNS), engaging the gut-liver-brain axis as a key integrative network linking stress to systemic metabolic and inflammatory outcomes. Stress-induced impairment of intestinal barrier integrity, dysregulation of nutrient transporters, hepatic lipid accumulation, iron dyshomeostasis, and cardiometabolic disturbances synergistically amplify both peripheral and neural vulnerability. Magnesium-L-theanine (MgT), a novel complex combining magnesium with the green tea-derived amino acid L-theanine, has emerged as a promising multi-target intervention against CVS-induced multisystem injury. Preclinical studies demonstrate that MgT preserves epithelial barrier architecture, restores tight junction and mucus-associated proteins, normalizes intestinal nutrient transporter expression, and attenuates hepatic steatosis, oxidative stress, and iron-driven metabolic damage under CVS conditions. These protective effects converge on the reactivation of key metabolic regulators, including nicotinamide adenine dinucleotide (NAD)/sirtuin 1 (SIRT1) and PPARγ signaling pathways, positioning MgT as a modulator of metabolic flexibility and redox resilience. Co-administration with the NAD precursor nicotinamide riboside further potentiates these responses by reinforcing NAD availability and downstream metabolic control. In parallel, human studies of magnesium and L-theanine supplementation report anxiolytic, antidepressant, sleep-promoting, and anti-inflammatory benefits, supporting the translational relevance of this combined approach. This review integrates current evidence on CVS-induced multisystem pathology, with a focus on the gut-liver-brain axis, and proposes MgT as a trace-element-based, systems-oriented strategy to mitigate chronic stress-related gastrointestinal, metabolic, and neuropsychiatric complications, while highlighting key mechanistic gaps and translational priorities for clinical advancement.

View on PubMed →DOI: 10.1177/20420188261451345