|
|
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.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
![Urinary catheterization. The procedure involves the insertion of a flexible tube, or catheter, throu](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_21_07_96742390.jpeg)
![One target for expanding medical services involves vaccinations. Only 78 percent of children ages 19 ...](https://biology-forums.com/gallery/47/medium_667187_21_02_17_5_23_23_25607561.png)