Bryce Harper just had 1/3 of his blood circulated out of his body, oxygenated, filtered, and returned

Bryce Harper spent part of his week hooked up to one of the wildest medical procedures you will ever hear an active MLB superstar admit to. The Phillies first baseman visited Dr. Joshua Redd for something called Extracorporeal Blood Oxygenation Ozonation and Filtration, also known as EBOO.

Bryce Harper EBOO procedure with Dr. Joshua Redd

Bryce Harper spent some time with Dr. Joshua Redd this past week for an interesting procedure – Extracorporeal Blood Oxygenation Ozonation and Filtration (EBOO).

Essentially, 1/3 of his blood was circulated out of his body, oxygenated, filtered, and returned to his body. pic.twitter.com/DH92htWB0p

— Shaun Nestor (@shaun_nestor) December 6, 2025

In simple terms, one third of Harper’s blood was circulated out of his body, oxygenated, blasted with ozone, filtered like a Brita pitcher for elite athletes, and then pumped back into him. If that sounds like science fiction, that is because it basically is.

EBOO is marketed as a premium integrative wellness therapy. It works by continuously pulling blood out through one arm, enriching it with medical grade oxygen and ozone, running it through an ultrafiltration membrane to remove waste, toxins, inflammatory molecules, and even microplastics, then returning the cleaned up blood into the other arm.

The entire session lasts a little over an hour and processes several liters of blood, far more than typical ozone therapies.

Clinics that offer EBOO claim it boosts oxygenation, improves circulation, enhances immunity, reduces inflammation, and helps the body clear out junk that normal organs struggle to process.

It is pitched toward people dealing with everything from autoimmune disorders to chronic fatigue to cardiovascular problems. In other words, it is the type of procedure you find in the world of biohacking and alternative medicine, the same universe where professional athletes attempt to squeeze every remaining drop out of their careers.

Makes perfect sense why Bryce Harper is interested.

The man openly talks about wanting to be the Tom Brady of baseball. He wants to play well into his 40’s and is all over social media drinking raw milk and all other types of organic substances to keep his body in shape.

Basically, Bryce Harper wants to keep his body as close to peak form as possible.

Can’t argue with that, right?

What nobody realized is that EBOO is legal to administer in the United States but is not approved by the FDA for treating or preventing any illness. That puts it in the same general category as most alternative therapies that operate outside conventional medicine.

MLB players are not allowed to use performance enhancing drugs or substances that fall under the banned lists of the Joint Drug Prevention and Treatment Program. The league relies heavily on FDA approval as a benchmark for medical legitimacy. Treatments that are not FDA approved cannot simply be used as loopholes unless the player has a legitimate documented medical need and receives a Therapeutic Use Exemption.

Even then, the medication or treatment must align with standard U.S. and Canadian medical practice. Something like EBOO would never qualify for a TUE. It is not a medication, it is an experimental wellness procedure, and the league has the authority to treat anything that enhances performance or recovery beyond normal standards as a potential violation.

Supplements are already a minefield for players. MLB tells everyone to stick to NSF Certified for Sport products because countless supplements contain unlisted banned substances. Diet pills, testosterone boosters, amino acid blends, you name it.

Players are held responsible for what they put in their bodies, even accidentally. The same logic applies here. If a therapy crosses the line into chemical enhancement or introduces a banned compound, the player is liable.

The important detail is that ozone itself is not on the banned substances list.

EBOO is not injecting steroids or HGH. It is not introducing a chemical that metabolizes into a PED. It is essentially an extreme filtration and oxygenation process.

As of today, nothing about EBOO violates MLB policy. It is eyebrow raising, futuristic, and probably expensive, but legal.

So here we are. Bryce Harper is trying to extend his career in ways we did not even know existed. He is tapping into borderline science fiction in an attempt to be the last man standing in his generation.

I did not know this procedure was legal either. I did not know clinics were out here filtering microplastics out of millionaire bloodstreams. If the goal is to play at an MVP level at age 42, this is the type of thing that separates the obsessive greats from everyone else.

Bryce Harper really meant it when he said he wants to play forever and now we know just how far he is willing to go.

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