World’s Top Breath-Hold Freediver Diagnosed With Carditis After Pfizer Vaccine

Freediving record holder

Florian Dagoury, the world’s top breath-hold freediver, has been diagnosed with myocarditis and pericarditis 40 days after his second dose of the Pfizer shot.

Known as “Mr. 10 Minutes” for being able to hold his his breath for over 10 minutes underwater, the 34-year-old Frenchman shared the details of his diagnosis on Instagram.

After his second dose, Dagoury noticed that his heart rate was higher than normal and his breath-hold capacities went down significantly. When asleep, his usual 37-45 heartbeats per minute rose to 65-70 bpm. During the day, he is now always over 100 bpm, instead of 65 bpm, even when he seated and relaxing. Once, he even reached 177 bpm while having dinner with friends.

Ten days after his second jab, he went to see a cardiologist, who told him that what he was feeling was a common side effect of the Pfizer vaccine and that he had nothing to worry about. He was advised to rest until the symptoms pass.

Forty days afterwards, he still had no improvement, so he went to see another cardiologist at Samitivej Hospital, the leading hospital in Thailand, where his training is based. The new doctor diagnosed him with myocarditis, pericarditis, and trivial mitral regurgitation. This was on October 5th.

Dagoury is currently struggling to reach 8-minute breath hold, 150 meters down. Even at what for him is a relatively shallow depth of 40 meters, he already feels the urge to breathe. He estimates that his diving performance has decreased roughly 30 percent.

Currently based in Bangkok, Dagoury is recommending that freedivers choose a vaccine manufactured the old-fashioned way, instead of the mRNA ones. He mentioned Sputnik, Sinovac and Sinopharm as possible alternatives.