The Vipeholm experiments or Vipeholm Study were a series of human experiments where patients of Vipeholm Hospital for the intellectually disabled in Lund, Sweden, were fed large amounts of sweets, including "extra sticky toffee" to provoke dental caries. The experiments were sponsored both by the sugar industry and the dentist community, in an effort to determine whether carbohydrates affected the formation of cavities.
The experiments provided extensive knowledge about dental health and resulted in enough empirical data to link the intake of sugar to dental caries. However, today they are considered to have violated multiple principles of medical ethics.