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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.
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.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Vaccines prevent between 2.5 and 4 million deaths every year.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

