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thinking about loading on coffee To make it through your next road tripthink again.
1st August Study By Censuswide for Caramula “Curb Caffeine” campaign he was found highly caffeine Consumption before driving may impair performance.
Surveying 2,000 UK residents over the age of 16 about their caffeine intake and daily driving behaviour, the report estimated that 11 million UK drivers exceed the “safe” daily caffeine limit.
Working with Dr Tim Mercer, GP partner at TJ&SE Mercer Healthcare Ltd, their research shows that moderate caffeine intake, up to 300 mg, can increase alertness, but taking more than that can actually cause harm.
“Although the NHS advises that 400 mg of caffeine per day is a safe upper limit for most healthy adults, exceeding this level may cause restlessness, jitteriness and anxiety,” Mercer said in a news release.
He added, “For motorists, it’s important to stay calm and in control – too much caffeine can cause jitteriness and even urinary urges, both of which can be distracting while driving, where your full attention should be on the road.”
Nearly half (48 percent) of 17 to 24-year-olds reported experiencing caffeine-related side effects while driving, with 16 percent experiencing them frequently.
The study found that men were twice as likely to notice these effects as women (11 percent vs. 5 percent).
Overall, 5 percent of drivers, rising to 9 percent among those ages 25 to 34, say they cannot drive properly without caffeine.
Like all good things, caffeine is okay in moderation, Mercer said.
“Caffeine can make you feel more alert, but overdosing can lead to dependence and withdrawal,” he said, advising drivers to stay hydrated, eat regularly and consider decaf coffee, which can provide a mental boost without the side effects of caffeine.
Carmoola created a handy guide to caffeine levels in popular beverages, taking information from sources such as BBC Good Food, Monster Energy, Red Bull and Nutrition X, and standardizing the caffeine content per milliliter so it’s easy to compare.
They used Costa Coffee’s size chart as a reference for the medium drink as it is the UK’s most popular coffee chain in 2025, with its large Cappuccino packing 400 mg of caffeine.
Other studies show similar effects
A 2020 Loughborough University Study found that truck drivers who consumed large amounts of coffee and energy drinks reported more accidents and had worse overall health than those who consumed less caffeine.
Researchers divided more than 3,000 truck drivers into two groups: a high-intake group that drank about one caffeinated beverage per day, and a low-intake group that drank five or more caffeinated beverages per day, averaging 7.5 per day.
researcher The participants were divided into two groups: a low-caffeine group of drivers who drank about one caffeinated beverage per day, and a high-caffeine group who drank five or more caffeinated beverages per day, an average of 7.5 per day.
The researchers found that truck drivers in the high-caffeine group were involved in more accidents than those with lower intakes.
Studies also showed worse overall health compared to the low-caffeine group. High-caffeine participants smoked more and drank alcohol, exercised less, had unhealthy diets, slept less, felt more sleepy during the day, and were more likely to engage in risky or aggressive driving.