"The number of people using butter on bread went from 60 percent to 5 percent. Similarly, the number of people drinking fatty milk declined from about 40 percent to about 6 percent. Use of vegetable oil for cooking went from 2 percent of the population to 34 percent. These are only a few of the positive developments. From 1971 to 1995, the rate of ischemic heart disease dropped by 73 percent in North Kerelia and 65% in all of Finland."
Source: Brownell, Kelly D. and Horgen, Katherine Battle, Food Fight, 63.