The current cross-sectional study included 232 participants from the MedWeight, a registry of people who lost weight and maintained it (maintainers) or regained the loss (regainers) (5). Inclusion criteria were men and women aged 18–65 years of Cypriot ethnicity without any mental disorder, who reported being at least overweight (BMI ≥25 kg/m2) and experienced an intentional weight loss of ≥10% of their maximum weight at least 1 year before participation in the study. Each eligible participant was classified as “maintainer” if his/her current weight was ≤90% of his/her maximum weight or “regainer” if his/her current weight was ≥95% of his/her maximum weight. To avoid overlapping of groups, participants who had a current weight between 91 and 94% of their maximum weight were excluded. Current pregnancy was also an exclusion criterion.

This study was conducted according to the Declaration of Helsinki guidelines. All procedures involving research study participants were approved by the Cyprus National Bioethics Committee (EEBK.∏.2016.01.29) and all eligible participants signed a Consent Form before study participation. The recruitment procedure lasted 2 years (12/2017–12/2019) and occurred through media (i.e., television, radio, press releases). Upon entry, eligible volunteers were advised to access a website platform (http://medweight.hua.gr) to fill in a series of questionnaires regarding socio-demographic status such as marital status (single, married/cohabitating, divorced, widowed, then coded for married/cohabitating or not), occupational status (employed or not) and years of education. Participants were asked to report physical/personal characteristics such as sex, age, weight, height, BMI, maximum weight, maximum BMI, initial loss, maintenance loss, and duration of maintenance.

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