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Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
![Apply forearm to the deep fascia of the back. Stand to one side of the face cradle; use the proximal ...](https://biology-forums.com/gallery/32/medium_380798_22_08_17_12_32_35_328442163.jpeg)
![Hold hand around thumb and little finger and apply broadening strokes across the metacarpals. Press ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_4_11_48_331942140.jpeg)
![Direct pressure to deep rotator muscles using the elbow. Use the elbow tip to apply pressure moving ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_5_40_29_33226810.jpeg)