In Seine-Saint-Denis, a specialized hospital unit is treating former users of nitrous oxide, commonly known as laughing gas, who report severe physical and neurological consequences from prolonged misuse. The unit, located at the Avicenne Hospital in Bobigny, has seen an increasing number of patients presenting with symptoms ranging from loss of mobility to chronic pain, directly linked to the recreational inhalation of the gas from pressurized canisters.
Medical staff at the facility describe cases where individuals, many of whom are young adults, can no longer walk or run without assistance due to vitamin B12 deficiency caused by nitrous oxide’s interference with the body’s ability to absorb the nutrient. One patient, quoted in verified reports, said, “I could no longer run,” describing how the habit, initially perceived as harmless, led to debilitating health effects over time.
The rise in nitrous oxide use has been tied to products marketed under brands like Cream Deluxe, which sell flavored gas canisters in bright packaging targeting younger consumers. French authorities and advocacy groups have raised alarms about the deceptive marketing of these products, which are often promoted as culinary accessories despite clear evidence of recreational misuse.
In April 2026, the Antoine Alléno Association, a road safety group founded by Michelin-starred chef Yannick Alléno after his son’s death in a hit-and-run incident in 2022, filed legal action against the companies behind Cream Deluxe. The group alleges dishonest trade practices, claiming the branding uses festive visuals and sweet flavors like “Strawberry Kiwi Ice” and “Lady Killer” to appeal to youth, despite the serious health risks associated with inhalation.
According to the association, the canisters are manufactured by Zhuzhou Xingye Chemical in China and distributed by IVM Firma Handlowa, a Polish company that has since ceased sales in France due to concerns over misuse. The legal case, filed in a Paris court, seeks a ban on these companies operating in France and demands accountability for what the group describes as a growing public health crisis.
French drivers’ advocacy group 40 Million Motorists reported that nitrous oxide was implicated in over 450 serious road accidents in France in the past year — a figure that has increased fortyfold over six years. Road safety officials warn that inhalation can cause sudden loss of coordination, blackouts, and burns from direct contact with the gas, significantly increasing the risk of accidents, especially among young users.
Beyond traffic incidents, health experts emphasize the neurological dangers of chronic nitrous oxide exposure. Prolonged use can lead to subacute combined degeneration of the spinal cord, resulting in numbness, difficulty walking, and, in severe cases, paralysis. These effects stem from the gas oxidizing vitamin B12, rendering it unusable by the body even when dietary intake appears sufficient.
The hospital unit in Bobigny provides multidisciplinary care, including neurology, physiotherapy, and nutritional support, to help patients recover function. While some regain mobility with treatment and abstinence, others face long-term disability, underscoring the need for early intervention and prevention.
Local officials in Seine-Saint-Denis have reported multiple interpellations related to the storage and sale of large quantities of nitrous oxide canisters, including a recent case in an épicerie where authorities seized significant stockpiles. These operations are often linked to online distribution networks that bypass traditional retail controls.
The Syctom, the regional waste management authority for Paris and surrounding areas, has similarly called for stricter regulations, citing safety risks from improper disposal of used canisters, which have been known to explode under heat or pressure — a phenomenon described by officials as occurring “every two hours” in waste processing facilities.
As the legal proceedings against Cream Deluxe’s alleged manufacturers continue, public health advocates stress the importance of regulating access to nitrous oxide and increasing awareness of its risks. They argue that current regulations fail to adequately address the gap between the gas’s legitimate industrial and medical uses and its widespread availability for recreational purposes.
For updates on the case, readers can follow proceedings through the Paris court system or official statements from the Antoine Alléno Association. Health guidance on nitrous oxide risks is available from French public health agencies, including Santé publique France.
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