The sixth edition of the workshop on Mining Actionable Insights from Social Networks (MAISoN 2021) took place virtually on June 7th, 2021, co-located with 15th International AAAI Conference on Web and Social Media (ICWSM 2021). This year, we organized a special edition with focus on healthcare social analytics. The aim of this edition was to bring together researchers from different disciplines to discuss research that goes beyond descriptive analysis of social media data and instead investigate different techniques that use social media data for building diagnostic, predictive and prescriptive analysis models for health applications. This topic attracted a lot of interest from the community especially because of all the considerations surrounding the impact of social media during the COVID-19 pandemic which has impacted on people's physical, mental and social health issues.

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