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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Plains zebra are highly dependent on water. Plains zebra are highly dependent on water.
Impetigo, a highly contagious bacterial infection. Impetigo, a highly contagious bacterial infection.
Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation.
With their specialized language and activities, surfers are highly recognized as members of a ... With their specialized language and activities, surfers are highly recognized as members of a ...
A highly simplified view of the overall plan of the human body. A highly simplified view of the overall plan of the human body.
In the 1960s, social psychologists did highly creative but controversial experiments. This photo, ... In the 1960s, social psychologists did highly creative but controversial experiments. This photo, ...
Video: Control of ventilation rate by other brain centers (posts, hypothalamus & cerebral cortex)

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