01-07-2016 19:05
01-07-2016 19:05
01-08-2016 00:59
01-08-2016 00:59
It's not possible at the moment and fitbit have not announced any plans for this. However, there is a feature suggestion that you may want to consider voting for:
https://community.fitbit.com/t5/Feature-Requests/Integrate-with-iOS-8-Health-App/idi-p/319432