Some people have turned to an unlikely source for what they're calling a more "natural" form of birth control - wild yams. Wild yams have the chemical diosgenin in the root of the plant and bulb, ...

Wild Yam (Dioscorea villosa) of the Dioscoreaceae (Yam Family), occurs from Texas to Nebraska to Minnesota and states eastward to the Atlantic Coast. In Arkansas, wild yam occurs statewide. The plant, ...