Pulmonary decompression sickness is the result of sudden, massive blocking the pulmonary arterial circulation by bubbles. Ordinarily, the lungs act as a filter and protect the arterial circulation from circulating…
Why does oxygen cause damage to the lung?Animal studies have shown that when the lungs are exposed to high levels of oxygen that deterioration occurs progressively by steps that overlap.…
Normally, fear and anxiety can he helpful, helping us to avoid dangerous situations, making us alert and giving us the motivation to deal with problems. However, if the feelings become…
Depressive Disorders (Depression and Manic Depression) (Bipolar disorder)Depressive and manic depressive illnesses are the two major types of depressive illness, also known as affective disorders, or mood disorders, because they…
ADHD or ADD is brain disorder affecting children early in life and continuing on into adulthood in some adults. The individuals display certain characteristic behaviors over a period of time,…
Recent studies are beginning to suggest that episodes of panic or near-panic may explain many recreational diving accidents and possibly throw light on the cause of some diving fatalities.Most think…
What is HyperventilationHyperventilation is the breathing response kicked off by chemical changes in the blood such as high CO2 or low oxygen level. It can also be set off by…
Some general effects of smoking marijuana:· The more marijuana is used, the shorter its effects last.· Tolerance to the psychoactive effects develops with continued use.· Psychological and mild physical dependence…
Beer While Diving?Some divers insist on drinking beer before, during and after their dives. Is there any danger in drinking alcoholic beverages and diving? The short answer is that by…
Dehydration DefinedDehydration means your body does not have as much water and fluids as it should. Dehydration can be caused by losing too much fluid, not drinking enough water or…