The include network: Advancing cross-linguistic equity in brain health research.

Speech and language measures are increasingly recognized as sensitive, scalable, non-invasive markers of diverse brain disorders. Yet, current research is overwhelmingly English-centric, neglecting the world's vast linguistic diversity and undermining these markers' global applicability. Here we present the International Network for Cross-Linguistic Research on Brain Health (Include), a multicentric initiative created to address this gap (https://include-network.com/). First, we review the network's origins, mission, and organizational structure. Then, we summarize key milestones achieved during its first 4 years, spanning cross-linguistic empirical studies, harmonized data-governance frameworks, and global dissemination efforts. We further highlight flagship projects demonstrating how linguistic typology and culture shape speech-language markers of neurodegeneration. Finally, we outline critical challenges and opportunities for the field, focusing on language underrepresentation, tool harmonization, regulatory heterogeneity, and expansion beyond neurodegeneration. Together, these efforts position Include as a strategic platform for fostering equitable, globally relevant brain-health research.