[The evolution of plasma cholesterol in 2 towns with intervention programs and 2 control towns in Switzerland]

As part of the "National Research Program 1A" (PNR 1A) on the prevention of cardiovascular disease, a study was made of changes in blood cholesterol levels in the populations of two intervention cities (Nyon and Aarau) with a community health education program, and two reference cities (Vevey and Solothurn). A fall in cholesterol levels was noted in both the intervention and reference cities, with no difference in between the cities. However, a clear, statistically significant (p less than 0.05) fall was recorded in a group of women who participated in prevention activities concerned with nutrition, in comparison with a group of non-participating women, in the two intervention cities.