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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.