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On average, the stomach produces 2 L of hydrochloric acid per day.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.