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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
There are 20 feet of blood vessels in each square inch of human skin.
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.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
![Plasma protein binding and drug availability: (a) drug exists in a free state or bound to plasma pro](https://biology-forums.com/gallery/47/medium_46687_12_12_14_7_07_20_19563968.jpeg)
![Plasma protein binding and drug availability: (a) The drug exists in a free state or is bound to ...](https://biology-forums.com/gallery/28/medium_482573_25_04_17_9_15_17_283522000.jpeg)