Anoxia is the extreme form of hypoxia, and it occurs when there is absolutely no oxygen at all in the body that the brain and tissues can make proper use of.

There are five different types of hypoxia. These types are hypoxemic hypoxia, anemic hypoxia, stagnant hypoxia, histoxic hypoxia, and pemic hypoxia.

Hypoxemic hypoxia happens when there is a reduction in the amount of oxygen passing into the blood, resulting in too much hemoglobin and not enough oxygen. Therefore the oxygen pressure in the blood that is traveling to the tissues is too low to saturate the large amounts of hemoglobin. Hypoxemic hypoxia is caused by a reduced gas exchange area, exposure to high altitude, or by lung disease. Hypoxemic hypoxia has also been proven to be hazardous to aviators, mountain climbers, and generally in people living at high altitudes because the lowered barometric pressure causes the supply of oxyge

Finally, the symptoms of the gastrointestinal category are nausea and vomiting.

That is just one example of the many different effects hypoxia can have on the brain. Any effect on the brain can be dangerous, because it is such a crucial organ of the body. That is why hypoxia is so dangerous, and why people should be extremely careful about avoiding it. Hypoxia is a mystery to most people, because they were never educated about its harmful effects on the body. This disease should be taught to people everywhere, because it can be caused by habitual activities such as sitting in the same position too long, or even by drugs such as alcohol which are wreaking havoc everywhere across the world. Hypoxia is not something to be joked about, it has the potential to seriously harm someone or even be fatal. That is why hypoxia should be considered a probable enemy to today's society.

In general, hypoxia can be caused by anything that lowers cellular respiration. It can be caused by agents such as narcotics, alcohol, formaldehyde, acetone, and specified anesthetic agents. Diseases of the blood, heart, circulation, or the lungs can also cause it.

Altitude sickness occurs because at high altitudes the air becomes much thinner, and therefore the amount of breathable oxygen drastically decreases. Also, the lower barometric pressures of high altitudes lead to lower partial pressure of oxygen in the alveoli in the lungs, which in turn decreases how much oxygen the red blood cells absorb from the alveoli for transport to the body's tissues. It can result in insufficient quantities of oxygen in the arterial blood supply, and therefore causes the symptoms of altitude sickness.

Hypoxia is often confused with altitude sickness, or mountain sickness. Although altitude sickness is associated with hypoxia, especially with hypoxemic hypoxia, they are not the same thing. Altitude sickness occurs only in people who are associated with high altitudes; such as mountain climbers, aviators, and people living at high altitudes. Hypoxemic hypoxia occurs in those same people, but for the aforementioned reasons. Altitude sickness is a condition in which the body is starved of oxygen because of the thinness of air at high altitudes. That is why altitude sickness is not the same thing as hypoxia; it is caused by the air and therefore affects the oxygen of the body whereas hypoxia directly affects the blood and oxygen of the body.

"What is High Altitude Training?" (2000). (On-line). Available: http://www.altitude

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