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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.