36% in women (87). For the Veterans Administration trial, the predicted
and observed changes are 20% and 24%, respectively (88).
Predicted effects are thus somewhat lower than observed effects,
which suggests that dietary fatty acids also affect other risk factors
for CAD. Epidemiologic observations, however, suggest a much
larger effect of changes in the amount and quality of dietary fat
and carbohydrates on CAD risk (89), and the possible reasons for
this were discussed elsewhere (90, 91).