Figure 1.

Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flow diagram of study selection. Study selection process: *Titles and abstracts were screened and studies were included if this revealed a possibility that the study would report weight gain after thyroidectomy; **full-text articles were assessed for eligibility. Excluded studies included those that did not report body weight changes and/or body weight measurements before and after partial or total thyroidectomy, with at least 2-months’ follow-up.