Either they actually use this data to further medical research (which is something that would be marketed loudly) https://investor.fitbit.com/press/press-relea

Either they actually use this data to further medical research (which is something that would be marketed loudly) https://investor.fitbit.com/press/press-releases/press-release-details/2018/Fitbit-Announces-Health-Partner-Apps-and-Clock-Faces-Aimed-to-Improve-Condition-Management-and-Overall-Health/default.aspx https://investor.fitbit.com/press/press-releases/press-relea...