The lack of randomized clinical studies makes it hard to judge the value of HBOT for many of its claims. Available scientific evidence does not support claims that HBOT stops the growth of cancer cells, destroys germs, improves allergy symptoms, or helps patients who have chronic fatigue syndrome, arthritis, multiple sclerosis, autism, stroke, cerebral palsy, senility, cirrhosis, or gastrointestinal ulcers.

Carefully controlled scientific studies are going on to find out whether HBOT may be helpful for lymphedema (swelling in arms or legs after surgery, which can happen after modified radical mastectomy or other treatments in which lymph nodes are removed or irradiated), diabetic ulcers, cluster headaches, heart attacks, and other conditions.

Are there any possible problems or complications?

HBOT is a relatively safe method for approved medical treatments. Complications can be reduced if pressures within the hyperbaric chamber remain below three times the normal atmospheric pressure and sessions last no longer than 2 hours.

Milder problems associated with HBOT include claustrophobia, fatigue, and headache. More serious complications include myopia (short-sightedness) that can last for weeks or months, sinus damage, ruptured middle ear, and lung damage. A complication called oxygen toxicity can result in seizures, fluid in the lungs, and even respiratory failure. Patients at high risk of oxygen toxicity may be given “air breaks” during which they breathe ordinary air rather than pure oxygen for short periods during treatment. People with severe congestive heart failure may have their symptoms worsened by HBOT. Patients with certain types of lung disease may be at higher risk of collapsed lung during HBOT. Pregnant women should be treated with HBOT only in serious situations where there are no other options. Hyperbaric oxygen chambers can also be a fire hazard: fires or explosions in hyperbaric chambers have caused about 80 deaths worldwide.

Relying on this treatment alone and delaying or avoiding conventional medical care for cancer may have serious health consequences.

Hyper” means increased and “baric” relates to pressure. Hyperbaric oxygen therapy (HBOT) thus refers to intermittent treatment of the entire body with 100-percent oxygen at greater than normal atmospheric pressures. The earth’s atmosphere normally exerts approximately 15 pounds per square inch of pressure at sea level. That pressure is defined as one atmosphere absolute (abbreviated as 1 ATA). In the ambient atmosphere we normally breathe approximately 20 percent oxygen and 80 percent nitrogen. While undergoing HBOT, pressure is increased up to two times (2 ATA) in 100% oxygen. In the Sechrist monoplace chambers utilized at our facilities, the entire body is totally immersed in 100-percent oxygen. There is no need to wear a mask or hood. This increased pressure, combined with an increase in oxygen to 100 percent, dissolves oxygen in the blood plasma and in all body cells, tissues and fluids at up to 10 times normal concentration—high enough to sustain life with no blood at all (from 20% to 100% oxygen is a 5-fold increase, from 1 ATA to 2 ATA can double this again to a 10-fold or 1,000% increase).

While some of the mechanisms of action of HBOT, as they apply to healing and reversal of symptoms, are yet to be discovered, it is known that HBOT:

1) greatly increases oxygen concentration in all body tissues, even with reduced or blocked blood flow;

2) stimulates the growth of new blood vessels to locations with reduced circulation, improving blood flow to areas with arterial blockage;

3) causes a rebound arterial dilation after HBOT, resulting in an increased blood vessel diameter greater than when therapy began, improving blood flow to compromised organs;

4) stimulates an adaptive increase in superoxide dismutase (SOD), one of the body’s principal, internally produced antioxidants and free radical scavengers; and,

5) aids the treatment of infection by enhancing white blood cell action and potentiating germ-killing antibiotics.

While not new, HBOT has only lately begun to gain recognition for treatment of chronic degenerative health problems related to atherosclerosis, stroke, peripheral vascular disease, diabetic ulcers, wound healing, cerebral palsy, brain injury, multiple sclerosis, macular degeneration, and many other disorders (conditions treated). Wherever blood flow and oxygen delivery to vital organs is reduced, function and healing can potentially be aided with HBOT. When the brain is injured by stroke, CP, or trauma, HBO may wake up stunned parts of the brain to restore function.