Nearly 50 years after Bruce Lee’s sudden passing, Spanish researchers believe they’ve uncovered the true reason behind the martial arts legend’s untimely death — and it’s not what many expected. According to a recent study, excessive water intake may have played a critical role.
Bruce Lee, the renowned American actor and martial artist, died in Hong Kong in 1973 at just 32 years old. His unexpected death has long been surrounded by rumors and conflicting theories.
On July 20 of that year, Lee spent time at actress Betty Ting’s home with his producer. He reportedly smoked marijuana and later, after drinking water around 7:30 p.m., began to feel lightheaded. Ting gave him Equagesic, a medication containing aspirin and a tranquilizer he’d used previously. He went to rest but was found unresponsive a couple of hours later. He was rushed to the hospital but declared dead upon arrival.
The autopsy revealed severe brain swelling — Lee’s brain weighed significantly more than normal. Traces of marijuana were found, and doctors at the time attributed his death to a bad reaction to the medication.
But now, researchers led by Priscilla Villalvazo from the Autonomous University of Madrid challenge that explanation. They point out that Lee had taken the same medication before with no issues and that it came after he already felt unwell.
They argue that a drug allergy would have shown additional symptoms during the autopsy. Other ideas like heatstroke or an epileptic episode were also dismissed due to a lack of supporting evidence.
The researchers propose that hyponatremia — a condition where sodium levels in the blood drop too low — may have caused the fatal swelling in his brain. Sodium is essential for balancing fluids in the body, and drinking too much water without proper salt intake can cause cells to swell dangerously.
Lee’s daily routine likely made him vulnerable. In his final months, he was known to consume mostly liquids, avoiding solid food and reportedly drinking mostly fruit juices. This diet could explain his significant weight loss during that time.
Moreover, friends noticed he had started drinking large amounts of alcohol, at times downing over 10 bottles of sake in one night. His marijuana use also led to increased thirst and, consequently, more fluid intake — even on the day he died.
Interestingly, Bruce had a similar scare two months earlier, on May 10, when he collapsed after using cannabis and taking a bath. That incident also involved brain swelling.
The researchers concluded: “We believe Bruce Lee died due to a type of kidney failure — his body couldn’t remove excess water fast enough. This likely caused hyponatremia, swelling in the brain, and ultimately, his death within hours.”
And in a poignant twist, they added: “While Bruce famously said, ‘Be water, my friend,’ it may have been water itself that tragically ended his life.”
