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The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

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The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Tertiary structure of sperm whale myoglobin Tertiary structure of sperm whale myoglobin
An old concept of genetic transmission—a homunculus in a sperm cell. An old concept of genetic transmission—a homunculus in a sperm cell.
The basic structure of a spermatozoon (SPERM). The basic structure of a spermatozoon (SPERM).
Sperm Sperm
Hormonal pathways that influence sperm formation Hormonal pathways that influence sperm formation
General mechanism of sperm formation in animals General mechanism of sperm formation in animals
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