Inclusion Criteria:  Using WFPB lifestyle program. Were measured on a body composition analyzer at least two successive times on the same body composition montor Tanita 780 S MA, Tokyo, Japan (at baseline, follow up) in a row at different intervals (i.e., before the start of the program and as part of follow up). Follow up up to 6 months Baseline BMI status was not an exclusion criteria. Data of participants that did not participate yet in our previous research. No medication use  If the individual performed more than two consecutive measurements, only the first two were included in the analysis.  Exclusion Criteria:  Being on vegan diet before joined in our program. Being adult (e.g., older than 18-years) before the start of the program. Participating in our preivous research using WFPB lifestyle program. Without severe chronic diseases or physical limitations (described bellow).