|
|
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.
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
![The tolerance of male lions towards the cubs varies. They are, however, generally more likely to sha](https://biology-forums.com/gallery/47/medium_27638_22_04_12_9_12_32.jpeg)
![The ovaries. In addition to producing ova, the ovaries secrete the female sex hormones, estrogen and](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_42_24_8232364.jpeg)