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Retinoids in Leukemia and Cellular Processes · Journal article
International Journal of Legal Medicine · August 12, 2026
Raises a question worth testing. It does not answer one.
This is a single case report of a young man who died from pulmonary embolism secondary to deep vein thrombosis after two months of excessive nitrous oxide consumption. The authors propose that nitrous oxide-induced vitamin B12 deficiency leading to hyperhomocysteinemia may have contributed to a hypercoagulable state, but this remains speculative; multiple confounding risk factors were present, and no mechanistic proof is provided.
Single autopsy case report. One male in his early twenties with a history of acute nitrous oxide intoxication requiring hospitalization and subsequent excessive home use.. Intervention: Excessive nitrous oxide consumption over approximately two months (exposure, not a therapeutic intervention).
Man in his early twenties hospitalized for acute nitrous oxide intoxication with concurrent vitamin B12 deficiency and anaemia Fatal pulmonary embolism secondary to deep vein thrombosis found at autopsy two weeks after hospitalization Twenty empty nitrous oxide cartridges found at death scene; reported excessive use over approximately two months
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
Clinicians evaluating sudden thromboembolic events in young individuals should consider excessive nitrous oxide use as a possible contributing factor, given its potential to induce vitamin B12 deficiency and associated metabolic derangements. However, this remains a hypothesis based on a single case and should not guide clinical practice without further evidence.
A single fatal case report proposing a mechanistic link between excessive nitrous oxide use, vitamin B12 deficiency, hyperhomocysteinemia, and pulmonary thromboembolism; raises a question rather than establishing causation.
As stated by the source record.
Quoted from the source exactly as published.
Clinicians evaluating sudden thromboembolic events in young individuals should consider excessive nitrous oxide use as a possible contributing factor, given its potential to induce vitamin B12 deficiency and associated metabolic derangements. However, this remains a hypothesis based on a single case and should not guide clinical practice without further evidence.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Abstract A man in his early twenties had been hospitalized due to acute nitrous oxide intoxication, during which a vitamin B12 deficiency and anaemia were also diagnosed. Two weeks later he was found dead in his apartment. Twenty empty nitrous oxide cartridges were found next to the body, and according to his mother, he had been using nitrous oxide excessively for approximately two months. The autopsy revealed a fatal pulmonary embolism secondary to deep vein thrombosis, and toxicological analysis detected nitrous oxide in low concentrations in the blood. Regarding the pulmonary embolism, a coagulation disorder attributable to suspected hyperhomocysteinemia in the setting of vitamin B12 deficiency could be considered a contributory factor – this deficiency, in turn, may possibly be related to excessive nitrous oxide consumption over several weeks. Obesity and nicotine abuse were present as additional risk factors for thromboembolic events. Reapeted excessive nitrous oxide consumption can induce profound metabolic disturbances, including functional vitamin B12 deficiency and associated biochemical derangements. In cases of fatal thromboembolic events in young individuals, this possibility should be taken into account. Toxicological analysis may demonstrate recent nitrous oxide exposure and support the hypothesis, but it cannot establish the underlying biochemical pathology.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.