Thomson, SamuelA self-taught American herbalist, pig farmer and “endowed healer” (1769–1843) from New Hampshire, who founded Thomsonianism. Thomson qualified the ancient Greek doctrine of disease being the imbalance of the four “bodily fluids” (blood, phlegm, yellow bile and black bile) with the modifiers of hot and cold, wet and dry. Thomson concluded that cold was the ultimate pathologic state and sought to cleanse the body, adding to the body’s heat with 60 to 65 herbs, in particular lobelia (Lobelia inflata), a potent emetic; he advocated vomiting and purging for many conditions.
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