D-Chiro-Inositol in Clinical Practice: A Perspective from the Experts Group on Inositol in Basic and Clinical Research (EGOI)

Background: D-chiro-inositol is a natural molecule that, in association with its well-studied isomer myo-inositol, may play a role in treating various metabolic and gynecological disorders. Objectives: This perspective seeks to explore the mechanisms and functions of D-chiro-inositol, laying the foundations to discuss its use in clinical practice, across dysmetabolism, obesity, and hormonal dysregulation. Methods: A narrative review of all the relevant papers known to the authors was conducted. Outcome: D-chiro-inositol acts through a variety of mechanisms, acting as an insulin sensitizer, inhibiting the transcription of aromatase, in addition to modulating white adipose tissue/brown adipose tissue trans differentiation. These different modes of action have potential applications in a variety of therapeutic fields including: PCOS, dysmetabolism, obesity, hypoestrogenic/hyperandrogenic disorders, and bone health. Conclusions: D-chiro-inositol mode of action has been studied in detail in recent years, resulting in a clear differentiation between D-chiro-inositol and its isomer myo-inositol. The insulin sensitizing activities of D-chiro-inositol are well understood; however, its potential applications in other fields, in particular obesity and hyperestrogenic/hypoandrogenic disorders in men and women, represent promising avenues of research that require further clinical study.