“…In advising him about this it is important to give clear instructions as to what should be eaten, so that the reduced diet should be fully adequate in proteins and vitamins. Brock (1959) in his Humphry Davy Rolleston lectures on 'Nutrition and the Clinician' ~liscusses the controversial role of dietary fat 111 producing coronary atheroma and thrombosis. Although in Western privileged cultures other environmental influences such as 'tension' and lack of exercise are active, there is strong evidence that diet is a factor in pr_oc!ucing coronary atherosclerosis, the deter-n_iuung element being the quality and quan-~Ity of dietary fat.…”