Browse the latest forensic toxicology articles or search the collection.
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Methamphetamine and Hearing Loss: Why the Audiometry Definition and Adjusted Table Matter
A historical NHANES analysis associated ever-use with a broad hearing-loss endpoint. Its tables distinguish adjusted estimates, frequency-specific nulls and measured hearing from a proven toxic mechanism.
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Why Methamphetamine Surgical Studies Reported 31.4% Instability but 2.7% Complications
A first-hour anesthesia endpoint and complications during orthopedic hospitalization are not the same outcome. Two retrospective studies illustrate why their percentages should not be ranked directly.
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Did Methamphetamine-Associated MRSA Require Injection? Reading a Rural Case–Control Investigation
Most methamphetamine users with MRSA in a small historical investigation reported smoking or inhalation. The study supports examining routes and transmission separately.
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Methamphetamine, MRSA and Wound Healing: Why More Collagen Gene Activity Did Not Mean More Collagen
A mouse and cell study found impaired healing alongside increased collagen-gene expression. Production signals, tissue content and wound closure measured different parts of the process.
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Reversible Large-Artery Narrowing After Methamphetamine Use: What Paired CT Scans Added
Two historical cases showed severe arterial narrowing that resolved on repeat CT. Serial imaging supported a dynamic process without proving a drug dose, timing threshold or treatment effect.
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Methamphetamine and Bone Density: What a Mixed-Drug Cohort Can Establish
Nineteen participants named methamphetamine as their most-used drug in a 108-person cohort. Bone-density differences require careful separation from drug-specific effects and fracture risk.
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Does a Higher Neutrophil-to-Lymphocyte Ratio Prove Methamphetamine Caused Inflammation?
A 2026 study linked amphetamine-class urine positivity with a higher blood-cell ratio, but missing clinical data and unadjusted substance comparisons limit causal claims.
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Does Cyanide Detected During Laboratory Methamphetamine Heating Establish a Smoker’s Dose?
Laboratory spectroscopy and molecular simulations identify possible thermal products, while leaving real-world inhaled dose and clinical effect unmeasured.
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Did Methamphetamine Reduce Sperm Count in Mice? Why the Null Count Result Matters
A 35-mouse experiment reported altered sperm quality and DNA assays, but its sperm-count comparison was not statistically significant and it did not measure human infertility.
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Did Higher Prolactin During Methamphetamine Abstinence Mean Fewer Pituitary Dopamine Receptors?
A small human study found higher plasma prolactin alongside null ACTH, cortisol and pituitary D2-receptor comparisons.
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Does a Methamphetamine–Parkinson’s Association Establish a Diagnosis or a Neuron-Loss Mechanism?
A Utah cohort found more subsequent Parkinson’s diagnoses after coded stimulant misuse, while exposure specificity, diagnostic coding and medication confounding limited causal interpretation.
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Does Ground-Glass Lung Opacity Identify Methamphetamine Injury? A Historical Case
A 44-year-old patient’s respiratory improvement supported a clinical attribution, while nonspecific imaging and several treatments limited causal certainty.
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Did Cooling Prevent Methamphetamine Liver Injury—or Repair Injury Already Established?
A 2013 rat experiment began cooling during methamphetamine exposure. Its protective comparison did not test delayed treatment after established liver injury.
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Does a Methamphetamine Ventricular-Arrhythmia Study Prove That Every Associated Death Was Arrhythmic?
A 2025 cohort reported separate associations with a composite rhythm outcome and all-cause mortality; neither endpoint identifies every death’s mechanism.
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Why Did Age Adjustment Reverse a Methamphetamine–Atrial Fibrillation Association?
A 23.6-million-person cohort illustrates how age can mask an association—and why an adjusted hazard ratio still does not establish individual causation.
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Can Retinal Imaging Prove Methamphetamine Caused Vision Loss?
A bilateral retinopathy case showed extensive vascular injury, while exposure timing and the proposed vasospasm mechanism remained uncertain.
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Does a 40% Rhabdomyolysis Finding Apply to Everyone Who Uses Methamphetamine?
The 22/55 finding came from selected patients with clinical sympathomimetic toxicity and confirmatory urine testing, not a general user population.
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Can Methamphetamine in Breast Milk Reveal the Mother’s Dose? Two Historical Cases
A 2009 study measured milk concentrations after self-administered intravenous exposure, while the dose and purity remained unknown.
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Does a Median Infant Amphetamine Dose Below 10% Establish Breastfeeding Safety?
A four-pair pharmacokinetic study reported a median relative infant dose of 5.7%, but one estimate was 13.8% and long-term outcomes were unknown.
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Can Social Context Change Methamphetamine Brain Heating? A Twelve-Rat Experiment
A 2003 thermorecording experiment found stronger, longer brain heating during social interaction, but it did not establish a human temperature prediction.