HIV was isolated in 1983 and can be treated with protease inhibitors . Psychiatrist John Cade pioneered lithium as a treatment for bipolar disorder . Professor Jan van Dam discovered bacteria as a cover - up on teeth . Professor John Marker 's experiments with plant steroids led to the Pill .
HIV was isolated in 1983 and can be controlled with protease inhibitors . Psychiatrist John Cade pioneered lithium as a treatment for bipolar disorder . Dutchman Antonie van Leeuwenhoek discovered bacteria as a build-up on teeth . Professor Russell Marker 's experiments with plant steroids led to the Pill .