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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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Analyzing Serum Biomarkers to Predict Antidepressant Efficacy in Depression (2023 Study)

Depression, a complex and often debilitating mental health condition, affects millions globally. Despite advances in psychiatric medicine, finding the right treatment remains a challenge for many. A recent comprehensive study, however, is shedding light on this issue by examining the role of serum biomarkers in predicting the effectiveness of antidepressant therapy. Highlights: Innovative Approach: This …

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Long COVID Brain Fog & Cognitive Deficits Linked to Specific Biomarkers

A large prospective study has uncovered two blood biomarker profiles measured during acute COVID-19 that are associated with cognitive deficits months later. Higher fibrinogen and lower C-reactive protein predict both objective and subjective cognitive impairment. Higher D-dimer and lower C-reactive protein predict subjective deficits and occupational impact. Key Facts: In 1,837 COVID-19 patients, two acute …

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