How nitrous oxide became a deadly - but legal - American addiction

Nitrous oxide overdoses have increased in the US, but the substance is still legal as a "culinary product".

Watch LiveBritish Broadcasting CorporationHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveHomeNewsIsrael-Gaza WarWar in UkraineUS & CanadaUKUK PoliticsEnglandN. IrelandN. Ireland PoliticsScotlandScotland PoliticsWalesWales PoliticsAfricaAsiaChinaIndiaAustraliaEuropeLatin AmericaMiddle EastIn PicturesBBC InDepthBBC VerifySportBusinessExecutive LoungeTechnology of BusinessFuture of BusinessInnovationTechnologyScience & HealthArtificial IntelligenceAI v the MindCultureFilm & TVMusicArt & DesignStyleBooksEntertainment NewsArtsArts in MotionTravelDestinationsAfricaAntarcticaAsiaAustralia and PacificCaribbean & BermudaCentral AmericaEuropeMiddle EastNorth AmericaSouth AmericaWorld’s TableCulture & ExperiencesAdventuresThe SpeciaListEarthNatural WondersWeather & ScienceClimate SolutionsSustainable BusinessGreen LivingAudioPodcastsRadioAudio FAQsVideoLiveLive NewsLive SportHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveWeatherNewslettersWatch LiveHow 'laughing gas' became a deadly - but legal - American addiction5 days agoShareSaveEve WebsterBBC NewsShareSaveSubmitted to BBCMeg Caldwell, centre left, died of a suspected nitrous overdose at 29Nitrous oxide – known colloquially as "laughing gas" – has many uses, from a painkiller during dental procedures to a whipping agent for canned whipped cream.

While its euphoric side effects have long been known, the rise of vaping has helped create a perfect delivery vehicle for the gas - and a perfect recipe for an addiction, experts warn.

Meg Caldwell's death wasn't inevitable.

The horse rider from Florida had started using nitrous oxide recreationally in university eight years ago. But like many young people, she started to use more heavily during the pandemic.

The youngest of four sisters, she was "the light of our lives," her sister Kathleen Dial told the BBC.