Paris has imposed a temporary ban on drinking alcohol in public after a four‑fold rise in cardiac arrests was recorded within a single 24‑hour period during the current European heatwave. The measure is designed to ease the strain on hospitals and emergency services, which officials say have been pushed to “saturation point” by heat‑related illnesses.
Paris police chief Patrice Faure warned that consuming alcohol in the sun can have a “devastating effect”, and the ban covers all public spaces and off‑licence sales. The move reflects growing concern across Europe as record‑breaking temperatures place an unprecedented burden on healthcare systems.
The physiological toll of alcohol in a heatwave
The dangers of drinking during hot weather are far more serious than a simple hangover. Alcohol acts as a diuretic, meaning it forces the body to lose fluid through urination. In normal conditions this is manageable, but during a heatwave the body is already losing significant amounts of water through sweating. Combining the two accelerates dehydration, often before a person realises they are in trouble. Symptoms range from thirst, fatigue and headache to dizziness, nausea and sickness. In severe cases dehydration can lead to confusion and seizures, requiring urgent medical attention.
Beyond fluid loss, alcohol directly impairs the body’s ability to regulate its own temperature. Drinking initially creates a feeling of warmth because it widens blood vessels near the skin – a process known as vasodilation. This causes the skin to flush and heat to be lost from the surface. Paradoxically, in hot weather this mechanism undermines the body’s cooling system, making it harder to shed excess heat. The result is a sharply increased risk of heat exhaustion and heatstroke. Heatstroke occurs when core temperature rises to dangerous levels and the body can no longer cool itself; without prompt treatment it can lead to organ failure. Early signs include headache, dizziness and disorientation, progressing to loss of consciousness, hallucinations and seizures.
The cardiovascular system also comes under acute pressure. High temperatures force the heart to work harder to maintain a stable internal temperature. Alcohol consumption compounds this by causing dehydration and affecting blood pressure, which can trigger dizziness, fainting and, in severe cases, heart attacks, arrhythmias or heart failure. The four‑fold spike in cardiac arrests seen in Paris is a stark illustration of how these factors combine to overwhelm the body’s defences.
For people with pre‑existing health conditions the risks multiply. Those with heart disease, diabetes, kidney disease or Parkinson’s are particularly vulnerable, as are older adults – especially those over 75 – babies, young children and individuals who live alone or are socially isolated. People on multiple medications or drugs that increase heat sensitivity, those already ill with diarrhoea or vomiting, individuals experiencing homelessness, and people with drug or alcohol dependence are all at heightened danger.
Broader strain on emergency services across Europe
The pressure is not confined to Paris. In London, the ambulance service reported its busiest day in 12 months during a recent heatwave, with paramedics noting that alcohol consumption in hot weather was adding to the load on emergency crews. The UK Health Security Agency has issued amber heat health alerts and advised the public to avoid alcohol, while the NHS recommends drinking plenty of fluids and steering clear of alcohol, caffeine and hot drinks.
The risks extend beyond dehydration and heatstroke. Alcohol impairs judgment, balance and coordination, making accidents more likely. During heatwaves many people seek relief in rivers, lakes and pools, but alcohol is a factor in an estimated 25% of all adult drowning deaths each year, according to the US Centers for Disease Control and Prevention. Among adolescents and adults, alcohol use is linked to up to 50% of deaths associated with water recreation. Nearly one‑third of all boating fatalities involve alcohol. Even sunburn is more common after drinking: one study found that 21.5% of people who reported being sunburned had consumed alcohol at the time.
For those who do choose to drink in hot weather, experts recommend limiting intake, drinking plenty of water or soft drinks between alcoholic beverages – a common guideline is 8–12 ounces of water per alcoholic drink – and eating hydrating foods. They also stress the importance of avoiding alcohol before swimming and remaining alert to the early signs of dehydration and heat illness. But the clearest message from public health authorities across Europe is consistent: during a heatwave, the safest drink is water.
