The first protocol, conducted in 1993-1994, compared the effects of three diets varying in total fat (37 percent, 30 percent, and 26 percent) and saturated fat (16 percent, 9 percent, and 5 percent) on plasma lipoprotein and thrombogenic activity in 103 normal adults. Subjects consumed the three diets for eight weeks each. Ten meals per week were consumed on-site and all other food was packed for take-home use.