Anxiety, Mild to Moderate

The aim of this randomized controlled trial is to evaluate the effectiveness and cost-effectiveness of Tiny Heroes, a parent-directed internet-delivered cognitive behavioral therapy (iCBT) program for anxiety problems in children aged 3 to 6 years within first-line mental health care in Region Stockholm, Sweden. The study will compare Tiny Heroes with treatment as usual at MALINA clinics and investigate whether the intervention leads to greater reductions in child anxiety symptoms. Secondary objectives include assessing effects on parental self-efficacy, family accommodation, life interference, treatment satisfaction, adverse events, and healthcare-related costs.

Emerging evidence from preclinical research suggests that prebiotic fibres may play a beneficial role in supporting mental health through modulation of the gut-brain axis-a complex communication network linking the gastrointestinal tract and the central nervous system. Chicory root-derived prebiotic fibre, already well-established for its positive effects on glycaemic control and bowel regularity, has recently shown promise in this context. The present study aims to investigate the mental health benefits of chicory root fibre in a larger and more diverse population, thereby contributing to the growing body of evidence supporting nutritional strategies for mental well-being.