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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).
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.
The familiar sounds of your heart are made by the heart's valves as they open and close.
![This red gasoline container holds about 30 gallons of gasoline and is used to fill vehicles used ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_3_10_42_295132149.png)
![A symbol showing an engine with an arrow pointing down is used on some General Motors vehicles to ...](https://biology-forums.com/gallery/30/medium_548020_31_05_17_2_04_54_30035354.png)