|
|
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
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.
![Adults in the Berlin Study of Aging show earlier declines on tests of nonverbal, fluid tasks (upper ...](https://biology-forums.com/gallery/27/medium_660366_07_04_17_9_55_37_274791554.jpeg)
![Using both hands, gently but firmly grasp the skin over a spot on the upper back, and lift the skin ...](https://biology-forums.com/gallery/32/medium_380798_22_08_17_12_32_33_328371368.jpeg)