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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
People about to have surgery must tell their health care providers about all supplements they take.
If you could remove all of your skin, it would weigh up to 5 pounds.
ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.