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Comment by harryleeming | Hacker News Reader

I'm using 2.4ATA 90min back to back sessions to treat my covid induced brain fog, with great results.

It's the first time in a year I can think clearly. Anyone with long covid should seriously look into this as a treatment, it has some solid science behind it and is very safe, albeit expensive.

At this point I've tried 14 different drugs, not a single thing has moved the needle except this.

More info here on it for long covid: https://oxygenhealing.co.uk/covid-19-hbot/post-covid-trials/

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What’s the long-term plan? Is there a point where you wean off or is this a rest-of-your-life thing?

Too early to say how transient the effect is, it's very possible my symptoms return after a few weeks. There are conditions that HBOT can out right 'cure', the bends and carbon monoxide poisoning are the first to come to mind. So I don't think it's out of the question that it's effects can be permanent.

One of the causes of my symptoms will be straight up organ damage, and there's plenty of evidence HBOT speeds up the healing of tissue damage. So any progress in this area should be permanent.

What do you mean by "back to back sessions"? How many sessions are we talking about here? What happens between one session and the next?

5 session of 90 minutes, then a 2 day break. Rinse and repeat. It's a navy diving protocol.

How much time between each session? A day?

Yep, one session per day :)

I found some instructional videos on how to make the chamber, looks very easy. It's only 5 PSI of pressure and an O2 mask. I already know how to make O2. This might be a fun project. On further reading, these aren't legal to have in the home in some countries due to fire codes.

5 psi chamber pressure won't get you to 2.4 ATA of inspired oxygen. Be really careful with building a chamber yourself. A fire inside a pressure chamber is a horrible way to die. Asphyxiation and explosive decompression are also risks.

Correct, 2.4 specifically is 35.27 PSI. I was just suggesting I can start with a small amount of pressure to test it myself. Avoiding explosions is rather simple. The air in the chamber can be normal levels of O2, which just means I need a proper mask that does not leak the O2 or the air I exhale. I already have O2 sensors. I can just tell it to alarm at 25% O2. Watching the videos on making the chamber is actually giving me a bit of a chuckle. I see people building these really complex steel chambers with hundreds of bolts as if they were expecting 50k PSI. I bet I could do this with plexiglass or even plastic. I can even add several pressure relief valves that open just above the threshold.

"Avoiding explosions is rather simple." – now, why does that read like famous last words?

I promise I will capture it on video so you can laugh at me.

What's "ATA"? The scammy-looking commercial page you linked doesn't mention it.

I found something. "ata" seems to mean "atmosphere absolute" and describes the total pressure:

"The ata unit is used in place of atm to indicate the total pressure of the system, compared to a vacuum. For example, underwater pressure of 3 ata would mean that this pressure includes 1 atm of air pressure and thus 2 atm due to the water.", from https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)#Pre...

Makes me think of the air commercial from Lorax- https://youtu.be/NWZUp2KF5ls

Correct. More specifically, you breathe a denser oxygen mix (2 atmospheres of density).

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