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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

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There are 20 feet of blood vessels in each square inch of human skin.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Cnidarians have specialized stinging cells called cnidocytes Cnidarians have specialized stinging cells called cnidocytes
Animals of Hindustan monkeys called bandar that can be taught to do tricks Animals of Hindustan monkeys called bandar that can be taught to do tricks
A clouded leopard at the Feline Conservation Center, Rosamond, California A clouded leopard at the Feline Conservation Center, Rosamond, California
People whose behaviors violate norms are often called mentally ill. “Why else would they do such ... People whose behaviors violate norms are often called mentally ill. “Why else would they do such ...
The upper intake manifold, often called a plenum, attaches to the lower intake manifold. The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
Five layers or sheaths called koshas in Ayurvedic philosophy. Five layers or sheaths called koshas in Ayurvedic philosophy.
Video: Membrane transport proteins - pores, gated channels and pumps

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