The Dangers of Laughing gas

I used to work in a highly specialised, controlled environment designed to manufacture semiconductor devices and integrated circuits on the tenth floor of the Ashby Building at Queen’s University Belfast. It was a clean laboratory where continuous filtration achieved 99.99% efficiency in removing even the smallest particles.

The air we breathe is a precise mixture of gases:

Nitrogen 78%, Oxygen 21%, Argon and trace gases 1%, and Carbon dioxide 0.04%.

On one occasion, an alarm sounded to warn that oxygen levels in the lab had risen too high, and we were instructed to evacuate until they returned to normal. It served as a powerful reminder of how vital—and how finely balanced—this mixture is for life. Disturbing it, even slightly, can have serious consequences.  So imagine my surprise when, this morning, I found something quite different on the doorstep of my apartment block, left out with the usual rubbish for collection.

There were around six blue canisters labelled Miami Magic—nitrous oxide. While commonly used for whipping cream, it is increasingly misused by young people for recreational purposes. I doubted anyone needed to whip that much cream and wondered who was using this substance here in Malta.

Nitrous oxide is now considered the third most commonly used drug among 16–24-year-olds in the UK, after cannabis and cocaine. Other surveys suggest that between 10% and 20% of teenagers and young adults in some European regions have tried it at least once. A global survey in 2021 estimated that nearly 24% of people aged 16–24 had used it. In the United States, poison centres recorded a 1,332% increase in annual cases of nitrous oxide poisoning over a 20-year period, with a particularly sharp rise from around 2023.

How it is used recreationally

Typically, the gas is released from the canister into a balloon—direct inhalation from the canister is dangerous due to the pressure and extreme cold. The user then inhales the gas from the balloon to experience its effects. In some places, young people pay around five euros for two balloons. As always, where there is demand, there are those willing to profit from it. Recent local reports have highlighted the growing use of this gas among young people in Gozo.

The Effects

Often called “laughing gas,” the effects are almost immediate but short-lived, lasting only a minute or two. They include light-headedness, euphoria, giggling, and altered perception. Because the effect is so brief, users often repeat the process multiple times in a session, increasing the risks. The name itself tends to downplay the seriousness of the substance.

Immediate risks

Nitrous oxide reduces oxygen availability in the body, which can lead to fainting, loss of consciousness, or, in extreme cases, death. The gas is stored under pressure and expands rapidly, which can cause cold burns—freezing the skin, lips, or throat if inhaled improperly. It can also affect heart and breathing function, particularly when combined with alcohol or other drugs.

With repeated or heavy use

Nitrous oxide interferes with vitamin B12, leading to deficiency. This can cause nerve damage, resulting in numbness, tingling, weakness, and difficulty walking. In severe cases, it may lead to long-term damage to the spinal cord or brain. Mental health may also be affected, with symptoms such as mood changes, confusion, and cognitive impairment. Some studies indicate that damage can develop within weeks or months of repeated use.

In response to these risks, governments are increasingly taking action. Malta has now officially banned the recreational use of nitrous oxide as of Wednesday, 29 April 2026. It is hoped that this measure will help reduce its use and prevent the harm it can cause—particularly among the young.