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IL-6 Deficiency Worsened Parkinson’s Mouse Models, Especially in Females

MHD featured image for IL-6 deficiency and sex-dependent Parkinson's disease mouse models.

A 2026 mouse study found that complete IL-6 deficiency worsened motor dysfunction and dopaminergic injury in MPTP and alpha-synuclein A53T Parkinson’s disease models, with earlier and broader vulnerability in female knockout mice.1 The result cuts against a simple “less inflammation is always better” frame: recombinant IL-6 partly improved MPTP-induced motor dysfunction and striatal dopaminergic terminal …

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Long COVID Fatigue Was Severe Without Clear Inflammation Biomarkers

MHD featured image for long COVID fatigue biomarkers and inflammation.

A 2026 controlled study of 96 people found severe long-COVID fatigue across 3 validated fatigue scales, but the tested peripheral inflammation, cellular-stress, neuroprotection, and autoimmunity markers did not significantly differ by group or explain fatigue severity.1 The finding argues against a simple blood-marker story, not against the reality of long-COVID fatigue. Research Highlights Fatigue was …

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Morganella Phospholipids Triggered IL-6 in Depression Mechanism Study

MHD featured image for Morganella gut bacteria, phospholipids, and depression-related inflammation.

A 2025 Journal of the American Chemical Society study identified 4 unusual Morganella morganii phospholipids that activated TLR2/TLR1 immune receptors and induced inflammatory cytokines, especially IL-6.1 The finding does not prove that one gut bacterium causes depression, but it gives the microbiome-depression field something it often lacks: a named molecule and a receptor pathway. Research …

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Anxiety Biomarkers: gp130, MMP-1, APRIL in 190 Adults

Stylized illustration of an anxious silhouette overlaid with vials and three biomarker labels (gp130, MMP-1, APRIL), representing the inflammation-anxiety biomarker associations in the Cancer Disparities Research Network cohort.

The link between psychological stress and chronic inflammation is well-documented — what’s been less clear is which specific inflammatory proteins move with anxiety in real-world community samples. A 2026 analysis from Loomans-Kropp et al. measured a 33-marker panel in 190 minoritized and medically underserved adults from the Cancer Disparities Research Network and identified three biomarkers …

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Whole-Body Hyperthermia for Depression: IL-6 Heat Genes

Whole-body hyperthermia looks less like generic relaxation and more like a timed biological stressor: in a small depression substudy, a single session was followed by early Hamilton Depression Rating Scale improvement, heat-shock gene activation, and immune-process enrichment that included interleukin 6 production. Research Highlights Depression scores improved early: in the 18-person RNA sequencing substudy, whole-body …

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Gabapentin Plus Hegu Embedding: 92% Postherpetic Neuralgia Response

MHD featured image for gabapentin, Hegu catgut embedding, postherpetic neuralgia, and sleep quality.

A 210-person randomized assessor-blinded trial found that adding weekly Hegu-point catgut embedding to gabapentin improved 4-week postherpetic-neuralgia response from 80.00% to 92.38%; compared with gabapentin alone, the add-on arm also ended with lower sleep-problem scores and fewer adverse events.[1] This 2026 trial supports an add-on signal that still needs sham-controlled confirmation because follow-up lasted only …

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Twin Study Finds No Broad Cytokine Link to Depression or Alcohol Use Disorder

Photoreal illustration of cytokine molecules and brain imagery, conveying inflammation-depression hypothesis under scrutiny.

The broad cytokine story failed its most direct community test: in 972 adults, depression, alcohol use, and alcohol use disorder (AUD) were not associated with C-reactive protein (CRP) or a pre-registered pro-inflammatory cytokine index. The only multiple-testing-corrected cytokine hits ran opposite the hypothesis — AUD was linked to lower IL-1β, IL-4, IL-10, and IL-12 — …

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