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The small intestine is made up of 3 segments: the duodenum, jejunum and ileum. The duodenum take in semi-digested food from your stomach continuing digestion. The jejunum is the middle section where food is carried through towards the ileum where most nutrients are absorbed into the bloodstream.
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Antonie van Leeuwenhoek (1632-1723), a Dutch microbiologist was the first to see human sperm under a microscope. His methodology for collection was limited by his religious beliefs and only collected samples after intimacy with his wife. He asked for his research to be destroyed in case it offended.
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One Victorian era beauty regimen was to apply skin products containing arsenic to achieve a pale complexion. Long-term arsenic exposure caused vitiligo (skin pigment loss) along with nervous system and kidney damage. ‘Arsenic baths’ was also recommended for “transparent whiteness” in Bohemia.
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