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9 stories for“nitrogen bubbles”
Divers call it the bends. Doctors call it decompression sickness. Here is what nitrogen bubbles actually do to tissue, and how hyperbaric treatment reverses it.
Feb 14, 2024
The old assumption was that one breath cannot load enough nitrogen to matter. Repetitive deep dives with short surface intervals disprove it, and the divers it happens to are usually working, not competing.
Aug 12, 2026
Three minutes at five metres is drilled into every diver and explained to almost none of them. It is not decompression, it is not required, and skipping it is not the emergency people assume.
Aug 9, 2026
A dive computer tracks pressure and time with precision, but the model behind it cannot see the diver wearing it. Here is what that gap actually means.
Mar 19, 2026
When a diver surfaces with decompression sickness, a hyperbaric chamber is the only real fix. Here is how recompression works, and where chambers actually are.
Nov 18, 2024
One demands breath control and stillness, the other demands equipment discipline. Here is what separates them and where beginners should start.
Jun 24, 2025
PFO, asthma, diabetes and certain medications can all change whether diving is safe. Here is why the medical questionnaire before a course matters.
Jan 27, 2025
Glasses do not fit under a mask, so the default answer is contact lenses. Eighty-five per cent of cases of a rare blinding corneal infection occurred in lens wearers who swam or dived in them, and there is a better option most divers never price.
Aug 20, 2026
The numbers every diver recites are not arbitrary and they are not a safety margin invented by lawyers. They come from a specific set of chamber trials, and knowing their limits tells you when to wait longer.
Aug 15, 2026
