Human body is designed to accept 21% oxygen. Too much oxygen may not be good to human body. It is just like vitamines. People used to believe that vitamin E is good since it is an antioxidant but when researchers start to look into it it did not show benefit. A short period of oxygen may be beneficial if the body needs it but use it recklessly will damage the body. If we put adult animals into pure oxygen for a few days a lot of them will die. Premature babies in high oxygen environment will damage their lungs. So, use oxygen wisely with a good reason.

Human body is designed to accept 21% oxygen. Too much oxygen may not be good to human body. It is just like vitamines. People used to believe that vitamin E is good since it is an antioxidant but when researchers start to look into it it did not show benefit. A short period of oxygen may be beneficial if the body needs it but use it recklessly will damage the body. If we put adult animals into pure oxygen for a few days a lot of them will die. Premature babies in high oxygen environment will damage their lungs. So, use oxygen wisely with a good reason.

Excess oxygen can generate free radicals in cells. These can be extremely damaging to tissues. Too little oxygen is bad, enough oxygen is good, too much can cause substantial damage.

Yes, oxygen therapy can have a good impact on restoring the state of human health in certain conditions. The 1st 2 answers above speak to an equilibrium/normal range of oxygen content (21%/enough O2 is good) and this is an important end-state. However, there are very clear existing health conditions and challenges that benefit from oxygen therapy. Professional athletes can be seen on the sidelines with oxygen masks to assist in their recovery from acute physical exertion, and in a very similar approach, paramedics consider the administration of oxygen to certain patients (cardiac and accident victims) roles. Oxygen therapy builds from there where hyperbaric oxygen is used to assist in the treatment of deep diving embolisms. Another area of study relates to the mixture of certain gases, for example Carbogen, where the concentrations of O2 and CO2 are increased, and nitrogen is removed. Whether the area of concern relates to the generation of ROS (cycled periods of excesses and shortages) and the ability of the bodies antioxidant defences to be at an equilibrium, or the ability to alter pH, research studies show there is a role and benefit from the manipulation of concentration levels (higher and lower) of O2. as R Teng notes above and G Shaw infers, use oxygen wisely. Suggest PubMedCentral searches for 'hyperbaric gases' and 'carbogen' for a start. Good luck!

why most of cancer patients have low percentage of oxygen level and also imbalance of mineral and vitamins? Is it tue that cancer cells are active in low oxygen level, acidic environment, imbalance of important mineral and vitamins as well as high level of toxic / heavy metals?One more thing is iodine deficiency also acts as a parameter for determining the health status of each individual, especially for cancer patients who have low iodine.

Budak, Low Oxygen and Low Iodine are just the two parameters from the infinite phenotypes exhibited by cancer. So one cannot rely on these two to frame a treatment strategy. Coming to O2 therapy for cancer the answer is crystal clear from others.

No expert to answer properly the original question of Budak,

may I nevertheless point to another circumstance of body cells and fluid: pH conditions....eg: if the pH decreases (due to uptake of food and drinks, oxygen levels in cells and tissues also will decrease, as this imparts also its [the body's or the cells' ] ability to function properly and their self healing diminishes drastically. So IMHO it (benefit of oxygen supplementation or therapy) will depend also on the state of general acidity or alkalinity of body / cell fluids (cf. also versus . having said this only as perhaps another point of suggestion or consideration in this posting thread.

Oxygen therapy (hiperbaric) can have a good result in bone infections (osteomyelitis). We need keep in mind too much oxygen can be extremely damaging to tissues. The O2 therapy must be administered with caution.

The long-term administration of 3-4 liter/minute of oxygen (> 15 hours per day) to patients with chronic respiratory failure associated to chronic obstructive pulmonary disease has been shown to increase survival in patients with severe, resting hypoxemia. Portable devices allow patients to be more active and to have an increased quality of life.

If the pathogenesis of the disease is feared to be related to deficiency of oxygen, Oxygen therapy may be the answer. But generaliseg it with pathophysiology of unrelated diseases / state of being unwell may not be a scientific approach in treating with oxygen. The boody tissues can withstand a paO2 of as less as 6-8 mm og Hg at the cellular level of the usual 103 mm Hg in lungs while breathing air at sea level. Remember, a fighter pilot is mostly in a state of hyper-oxygenation during flying even in the dilution mode of breathing yet, they are not free from the ill health. On the contrary, please be aware of oxygen parodox which may seriously worsen the condition of the patients during 100% oxygen breathing.

Excess of anything is bad, either it is in positive or negative direction.

However, in Yoga, Breathing exercises (Pranayam) help a person to attain a better state of mental and physical well being. Pranayam not just increases the lung capacity but also recharges the body with enough oxygen which clearly suggest a positive effect on oxygen on human health.

In the ancient times, Hindu Yogis used to go in the state of samadhi (deep spiritual sleep) in which breathing and heart beat used to be very low. By using these practices Yogis used to live longer than the usual life span of a human being.

I agree with all the answers. Anything in excess is not good for health. Should be in optimum.

Aerobic metabolism generates ROS. It is generally postulated that ROS leads to progression of diseases and some times causes vaso-construction and causes ischemia. We can't imagine what may be the condition of cellular homeostasis at excess oxygen condition. At low oxygen level, leads to hypoxia a pathological condition where organs are deprived of adequate oxygen supply.

So in my opinion, optimum level of oxygen is good.

As per Indian Yoga practice, in praanayama we used to control only breathing process not the intake of oxygen.

Most of the guys here do not know the mechanism of the function of oxygen in the body nor know how to boost oxygen levels in the body. Guys we are living in the 21st century !!!