Box 1.3 CALCULATING AND EVALUATING PERCENT WEIGHT CHANGE
Calculating Percent Weight Change
% weight change =(usual body weight - current body weight) X 100
usual body weight
Significant Unintentional Weight Loss
Time Period (% of Weight Lost)
1 week >2
1 month >5
3 months >7.5
6 months >10
Source: Academy of Nutrition and Dietetics. (2012) Nutrition care Manual. Available at http://nutritioncaremanual . org/fcontent cfm?ncm _content_ id =79554. Accessed on 8/16/2012.