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Mediastinal Air After Methamphetamine Inhalation: What CT and a Negative Esophagogram Actually Established
A 2024 case documented mediastinal and soft-tissue air after reported methamphetamine inhalation. CT did not show pneumothorax, and a contrast study did not demonstrate an esophageal leak. Those findings establish different parts of the diagnostic account.
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Urinary Retention After Reported Methamphetamine Use: Why Recurrence Did Not Establish Persistent Drug Exposure
A historical single-patient report paired recurrent urinary retention with high sphincter pressure and a history of recent stimulant ingestion. It did not measure a methamphetamine concentration, establish a dose, or prove why symptoms persisted.
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Prescription Amphetamines and Semen Testing: Why Lower Total Motile Count Did Not Mean Lower Sperm Concentration
A historical cohort of men undergoing fertility evaluation associated stimulant prescriptions with lower semen volume and adjusted total motile sperm count. Concentration, motility and morphology were not significantly different, and prescription records could not establish actual exposure.
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Methamphetamine, Ammonia and the Blood–Brain Barrier: What a 10,000-Dalton Tracer Could Show
A rat experiment linked peripheral ammonia, barrier proteins and passage of a defined tracer. Its molecular-size limit and unchanged temperature response qualify the mechanistic interpretation.
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Methamphetamine Plasma-Vesicle Research: Why a Marker-Positive Subset Matters More Than a Total Particle Count
A 20-woman exploratory study found a size-specific vesicle-marker difference despite null total-particle comparisons. Physical particle counts, marker-defined subsets and tissue origin require different evidence.
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Exercise After Methamphetamine Dependence: What a 28-Man Randomized HRV Comparison Added
An eight-week exercise comparison measured changes in resting heart-rate variability under residential treatment conditions. Its randomized contrast was separate from the nonrandomized drug-free comparison.
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Heart Rate and Heart-Rate Variability Gave Different Results After Methamphetamine Dependence
A small abstinent cohort showed selected variability differences despite a non-significant mean heart-rate comparison. A five-minute physiological recording did not establish an individual arrhythmia or mortality forecast.
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Salivary Alpha-Amylase After Methamphetamine: Eight Participants Produced Forty Post-Dose Observations
A controlled 30-mg intravenous study linked enzyme activity with subjective ratings. Repeated observations were not forty independent people, and the assay did not measure methamphetamine or impairment.
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Methamphetamine and Smell in Mice: What Neurogenesis and Autophagy Experiments Added
A mouse and neural-stem-cell study linked olfactory behavior with altered cell differentiation and protein handling. Reduced new-neuron formation was distinct from demonstrated widespread cell death.
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Prenatal Methamphetamine in Mice: Fetal Insulin Staining Was Not a Direct Secretion Measurement
A mouse experiment measured fetal size, pancreatic staining and placental glycogen before birth. Those findings support a metabolic hypothesis while leaving several links unmeasured.
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Methamphetamine and Rat Colon Biomarkers: Recovery of a Protein Signal Did Not Establish Neuron Recovery
A self-administration experiment measured changing protein signals in the distal colon. Marker normalization, neuronal survival and prediction of Parkinson disease are different claims.
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What the 2025 KAPPA Ketamine Protocol Could Establish About Methamphetamine Treatment
KAPPA’s published protocol planned a 20-person safety and feasibility pilot. Planned doses, recruitment targets and follow-up schedules are not observed treatment results.
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An Anti-Methamphetamine Antibody’s 17–19-Day Half-Life Was Not Methamphetamine’s Half-Life
The first ch-mAb7F9 human study measured antibody safety, serum pharmacokinetics and immune responses in healthy volunteers. It did not test clinical efficacy against methamphetamine use.
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Methamphetamine and Cryptococcal Brain Infection: What an Intravenous Mouse Challenge Actually Tested
A historical experiment studied brain invasion after fungus was deliberately placed in the bloodstream. It did not measure the risk of acquiring cryptococcosis through ordinary human exposure.
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Methamphetamine and a Tuberculosis Outbreak: Why 80.3% and 71.3% Describe Different Treatment Denominators
A historical outbreak investigation linked social networks, genotyping and outreach. Completion among treatment starters differed from completion among all contacts with positive skin tests.
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Prenatal Methamphetamine and Growth: Small for Gestational Age Was Different From Average Birth Weight
IDEAL reports found a small-for-gestational-age association despite an adjusted birth-weight null, followed by a modest height-trajectory difference. The cohorts and endpoints must remain attached to each result.
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Dry Mouth, Saliva Output and Jaw Clenching in Methamphetamine Research Are Different Findings
A 100-pair study measured stimulated saliva and oral signs, finding a jaw-opening null despite frequent reported clenching. Symptoms, function and historical tooth wear need separate interpretation.
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Recurrent Hypoglycemia and Methamphetamine: What a Single Patient’s Timeline Can Establish
Repeated low glucose and methamphetamine-positive screens strengthened a clinical suspicion in one case. They did not directly demonstrate pancreatic insulin release caused by the drug.
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Methamphetamine and the Gut Microbiome: Specific Taxa Changed Without a Diversity Difference
A 26-man observational study found selected microbial associations during abstinence. Diversity nulls, statistical thresholds and missing control-group blood markers limit a gut–immune mechanism claim.
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More B Cells Did Not Mean Better Antibody Responses in a Methamphetamine Mouse Study
A controlled antigen-challenge experiment separated tissue B-cell accumulation from serum immunoglobulins. Neither endpoint directly measured vaccine protection or human infection risk.