A survey of the diets of a random sample of 81 women in one of the South Wales' valleys was conducted in 1966. The results are compared with a similar survey conducted in 1983. Total energy intake was 16% lower in 1983 than in 1966, the proportion of this obtained from fat hardly differed (42 and 41% in 1966 and 1983, respectively). The average consumption of meat was greater by approximately 20% in 1983 and of potatoes and bread lower by 50% and 20%, respectively, than in 1966. Estimates of alcohol intake showed a very marked increase between the two surveys though this was largely a reflection of a fall in the proportion of women who consumed no alcohol during the week of the survey.