Schematic presentation of the proposed mechanistic pathways mediating
the effects of obesity on development of uterine leiomyomas. ↑ and
↓ denote increased or decreased level or function, respectively. + and
− denote enhancing or suppressing effect, respectively. IGF1,
insulin-like growth factor I; IGFBP, IGF-binding protein; IL, interleukin; TNF,
tumor necrosis factor.