Were there any effects of the WHI low-fat dietary pattern on body weight?
The WHI low-fat dietary pattern was not designed for weight loss. However, many women in the Dietary Change group maintained or lost weight on the low-fat dietary pattern. Women in the dietary change group weighed about 5 pounds less than the comparison group at one year, and after 9 years of follow-up still weighed about 1 pound less. This overall slowing of weight gain is good news since obesity is on the rise in the United States.