|
|
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
![Human, pilot whale and elephant brains up to scale. (1)-cerebrum (1a)-temporal lobe and (2)-cerebell](https://biology-forums.com/gallery/47/medium_27692_23_04_12_3_19_24.png)
![Major features of Homo erectus include increased brain size, an angular vault, and cranial superstru](https://biology-forums.com/gallery/47/medium_275510_22_02_15_5_56_52_207622175.jpeg)
![Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_37_17_22182952.png)