Allergic response produce histamines. These histamines will act on different areas of the body (eyes, throat, nose, gastrointestinal tract, skin or lungs) to produce symptoms of an allergic reaction. The allergic response is not limited to a certain amount of exposure. If the body is exposed to the allergen multiple times the immune system will react every time the allergen is present. The reason why people get allergies is not known. The allergens are not passed down through generations. It is believed if parents have allergies the child is more likely to be allergic to the same allergens. Some common symptoms include
Fabio Cannavaro during periods of anoxia and stress. It is not on the banned substance list. This chemical is, in partnership with adenosine triphosphate (ATP), fundamental to the ability of the body to produce muscular energy. Phosphocreatine is formed naturally within the body, with over 95% of the compound stored within the muscle cells. The body also receives dietary creatine primarily through the consumption of meat. No action was ever taken regarding this incident. On 8 October 2009, Cannavaro failed a drug test. However, Juventus claimed the drugs were medicine for a severe allergic reaction to a wasp sting, and not performance-enhancing.