According to reporting from Essex Live, clinicians at a Nottingham hospital treated a man in his 50s who arrived with neurological symptoms that initially puzzled the medical team.
The case, later described in BMJ Case Reports, noted that imaging confirmed an ischaemic stroke, an outcome the clinicians suggested was linked to unusually high blood-pressure levels.
The patient’s readings were well above what NHS guidance classifies as severe hypertension, complicating early decision-making.
Although initial treatment briefly stabilised him, physicians observed the numbers rise again, even after standard interventions.
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This unexpected pattern prompted further investigation into potential lifestyle contributors.
Eight energy drinks
During a follow-up consultation, the man revealed that he routinely consumed several high-caffeine energy drinks, about eight cans a day.
According to the case description in BMJ Case Reports, his caffeine intake reached roughly 1,200 to 1,300 milligrams per day, far exceeding the commonly recommended upper limit of 400 milligrams.
After he stopped drinking them, his blood pressure gradually normalised, enabling doctors to withdraw medication.
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Regulation, additives and a growing market
Experts note that many energy drinks contain stimulants such as guarana, a point highlighted in Essex Live’s reporting.
These additives can amplify caffeine’s overall effect, though the British Soft Drinks Association maintains, citing the EU’s food-safety authority, that current formulations remain safe when consumed within guidance.
The case contributes to a broader conversation about market regulation, youth access and consumer education at a time when energy-drink sales continue to rise.
Sources: Essex Live, NHS, and BMJ Case Reports.
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