|
|
The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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.
The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
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.
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
![(a) Zombies are a common theme in movies. However, (b) the number of zombie movies released each yea](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_38_22_19801064.jpeg)
![Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough](https://biology-forums.com/gallery/47/medium_12359_13_01_13_4_44_12.gif)