Absinthe ~ Vincent Van Gogh

Medical theories have even been proposed to explain Van Gogh's use of the colour yellow. One theory holds that Van Gogh's colour vision might have been affected by his love of absinthe, a liquor that contains a neurotoxin called thujone. High doses of thujone can cause xanthopsia: seeing objects in yellow. However, a 1991 study indicated that an absinthe drinker would become unconscious from the alcohol content long before consuming enough thujone to develop yellow vision.