Hair loss can be caused by genetic, hormonal, inflammatory and other factors. Hyperbaric oxygen therapy (HBOT) is a method of increasing the availability of oxygen by administering it in a pressurized environment so that more oxygen is dissolved into the blood plasma.
Understanding Hair Loss and Scalp Health
There are a few reasons why this can happen. Hair loss is a very common problem. It is important to establish the underlying cause, as different conditions may need different treatment approaches.
Androgenetic alopecia, also known as pattern hair loss, is a condition influenced by genetics and hormones. With time, the affected hair follicles become smaller and produce finer, shorter hairs.
Telogen Effluvium: This is a temporary hair loss that may be caused by physical stress, illness, surgery, major hormonal changes or nutritional deficiencies. This often occurs when more hair follicles than usual enter the resting phase of the hair growth cycle.
Alopecia Areata: This is an autoimmune disease in which the immune system attacks the hair follicles and causes patchy hair loss. The severity and rate of progression can vary from person to person.
In addition to these underlying causes, scalp circulation, follicle function and the surrounding tissue environment are important areas of interest in hair biology. Understanding how these factors interact may help researchers to investigate other means of promoting hair health.
The Effect of Oxygen on Hair Follicle Health
Cells need oxygen for cellular respiration , which is how they produce energy to carry out their normal functions . Hair follicles are metabolically active structures that undergo phases of growth, regression and rest. Their activity depends upon a suitable local environment and adequate delivery of nutrients and oxygen through the blood supply.
Healthy scalp tissue depends on normal blood circulation to deliver oxygen and nutrients. Therefore, studies of follicle function may be relevant to changes in the local tissue environment.
One of the suggestions is the scalp hypoxia theory . They believe that a decrease of oxygen in certain tissues of the scalp could create a less than ideal environment for the follicles to function healthily .
But this theory is to be taken with a grain of salt. Hair loss can be caused by a lot of things and scalp hypoxia has not been proven to be a cause of hair loss in all cases. Further studies are required to establish if oxygen availability is a factor of any importance in specific hair loss conditions, and if altering this availability has the potential to improve clinical outcomes.
How HBOT Might Relate to Hair Growth
Hyperbaric oxygen therapy is breathing oxygen in a pressurized chamber. The increased pressure causes more oxygen to dissolve directly in blood plasma. This established physiological effect has prompted the investigation of HBOT for many areas of medicine, including conditions characterized by tissue injury and impaired healing.
We can consider areas that may be relevant to hair growth.
Additional Oxygen Available
Under hyperbaric conditions, the amount of oxygen in the blood is increased and therefore the amount of oxygen delivered to tissues may be increased as well under certain clinical conditions .
The follicle needs a working blood supply , and the right tissue environment . So researchers might study how changes in oxygen availability affect follicular activity .
But more oxygen is not necessarily going to lead to better hair growth. At this stage, there is not sufficient evidence to conclude that HBOT reverses follicle miniaturization, prevents pattern hair loss, or stimulates meaningful hair regrowth.
Possible Effects on Tissue Repair
Oxygen is involved in many biological processes such as energy generation in cells, synthesis of collagen and some aspects of tissue repair. It also affects signaling pathways involved in the body’s response to tissue injury and inflammation.
These mechanisms may help to explain the scientific interest in HBOT beyond its known medical applications. “Researchers could study whether changes in tissue oxygenation might influence the hair follicle environment.”
But biological plausibility is not the same as demonstrable clinical effectiveness. The effects observed in other tissues or medical conditions cannot be directly extrapolated to hair follicles. It is not clear that HBOT induces any beneficial changes in scalp tissue that would lead to measurable hair growth.
HBOT Combined with Other Hair Loss Treatments
People who are losing hair have several established or clinically studied options depending on the diagnosis.
Minoxidil: This is a medication that is used to treat certain types of hair loss, especially pattern hair loss. It may be beneficial in some people to encourage hair growth, but results vary and continuous treatment is typically needed to maintain any gains.
PRP Therapy: Platelet-rich plasma (PRP) therapy involves taking a person’s blood, concentrating the platelets, and then injecting this concentrated portion back into the scalp. It is offered for selected hair loss conditions, but strength of evidence, treatment protocols and outcomes differ.
Medical Evaluation: A dermatologist can look at the pattern of hair loss, check medical history and medications and identify any potential contributing factors. Depending on the circumstances, additional testing may be indicated to determine if there are hormonal, nutritional, inflammatory or other underlying issues.
At present, there is not enough clinical evidence to confirm that HBOT enhances the efficacy of minoxidil or PRP therapy. So the notion of combining treatments should not be assumed to be better. Anyone considering using HBOT in combination with other hair loss treatments should consult with a qualified healthcare professional to discuss the possible benefits, risks, and alternatives.
HBOT as a Treatment for Hair Loss?
Whether HBOT is worth considering depends on the individual’s goals, diagnosis, and understanding of the evidence available.
Step 1. Determine the type and likely cause of hair loss. Since pattern hair loss, temporary shedding and autoimmune-related hair loss may require different treatment approaches, a proper diagnosis should precede treatment selection.
Second, discuss available treatment options with a dermatologist. In general, treatments with clinical evidence should be preferred to those for which effectiveness in hair regrowth has not been established.
Finally, if you’re considering HBOT specifically for hair growth, be aware that it’s still considered experimental for this use. HBOT should not replace proper medical evaluation or proven treatment options. Hyperbaric oxygen therapy also carries some potential risks, including ear and sinus pressure injuries, temporary changes in vision, and, rarely, oxygen toxicity or other serious complications. Appropriate medical assessment and supervision is necessary for treatment.
Conclusion
HBOT delivers oxygen at increased pressure, increasing oxygen availability, and its effects on tissue metabolism and repair offer a scientific rationale for exploring potential applications in hair health.
But the relationship between scalp oxygenation and hair follicle function is complicated. Although oxygen availability and the local tissue environment may be relevant to follicle biology, the evidence available does not support the efficacy of HBOT for treatment of hair loss.
If you notice your hair thinning or shedding excessively, the best first steps are to find out why and talk with a dermatologist about treatment options that are based on evidence.
Future high-quality clinical studies will be necessary to determine if HBOT can meaningfully improve hair growth, which patient populations may benefit, and what treatment protocols would be safe and effective.
