Apps that collect health or medical data are held to a higher standard by Apple. Missing consent flows, vague privacy policies, or sharing health data with third parties without disclosure will trigger a 5.1.3 rejection. This guide breaks down exactly what you need.
What Apple said
“Your app collects users' health or medical information but does not have a privacy policy that clearly explains how this sensitive data is used, stored, or shared. Apps that collect health data must provide clear disclosures and obtain explicit user consent before collecting such information.”
Apple treats health data as among the most sensitive information an app can handle. Guideline 5.1.3 requires a detailed privacy policy, explicit in-app consent before any health data is collected, and strict limits on sharing that data. A generic privacy policy that doesn't address health data specifically will not satisfy reviewers.
While you're at it — Apple also requires these pages for every app.
Fix this rejection, then make sure you're covered on the compliance side too. Apple requires every app to link to a hosted Privacy Policy, Terms of Service, Support page, and Data Deletion page. No link means another rejection — just for a different reason.