“…This description does not provide any information on the pathogenesis which has already been discussed by many workers (Williams, Ball, and Davies, 1954;Dyson and Decker, 1958); but it does lend support to the supposition that a diet consisting largely of plantains may be responsible for the occurrence of many ofthe cardiomyopathies in which endocardial fibrosis is seen, as bananas and plantains form a large part of the dietary intake of many Jamaicans (J. A. Hayes, 1965, personal communication), as they do in many other areas where these cardiomyopathies are seen, e.g.…”