How do I stop third party apps from requesting access to my Health app data?
Apple's Health app was created to help iOS 8 users store all their health data in one location, and to allow users to install third party Health-enabled apps to utilize this information. To do so third party apps need permission to access the data stored on the Health app, but you may not want some apps to access your private information. You can stop an app from repeatedly requesting access to your Health app data by navigating to Settings > Privacy > Health. From here you can manually disable apps that have requested access to your health data.