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Google Health Deleted Export Format

Google Health data exports are not yet available, but data collection is available for MyDataHelps participants. This article is being published ahead of Google Health data export availability and is subject to change.

As a reminder, Google is deprecating the Fitbit API on September 30th, 2026. After this date, Fitbit data will only be available through Google Health. Please refer to the Migrating Fitbit to Google Health article for additional information.

When a participant deletes Google Health data, the deleted records are indicated by participant, data type, and date range—not specific record IDs. Deleted data is not included in successive export files, and a companion _Deleted file is written identifying what was removed.

Each Google Health export that supports deletions includes a {ExportFileName}_Deleted file (for example, GoogleHealthExercise_Deleted, GoogleHealthSleep_Deleted, or GoogleHealthTimeSeries_BloodGlucose_Deleted), using the same field structure described below.

    To process a _Deleted record, remove any data of that type for the participant within the given date range including any subsidiary records such as sleep session stages. New data may be received from participants covering this same time period after processing a _Deleted record.

    Daily Data exports handle data deletion differently, with a new daily record containing an updated ModifiedDate which supercedes the previous record. See Google Health Daily Data Exports for details.

    Data Fields

    Field Description
    ParticipantIdentifier The identifier of the participant this entry was recorded for. Can be used to cross reference with Participants.
    CivilStartDate

    Start of the deleted date range, in participant's local time, with no timezone offset information. Records are on or after this date.
    CivilEndDate

    End of the deleted date range, in participant's local time, with no timezone offset information. Records are before this date (not inclusive of it).
    ParticipantID The stable, automatically generated, internal system identifier for this participant. Universally unique identifier (UUID).
    ModifiedDate When the deletion was recorded, in ISO 8601 format. Is always in UTC.

    Sample CSV Export

    ParticipantIdentifier,CivilStartDate,CivilEndDate,ParticipantID,ModifiedDate
    MDH-123,2025-06-01T00:00:00,2025-06-02T00:00:00,11111111-aaaa-1111-1111-111111111111,2025-01-01T05:00:01Z

    Sample JSON Export

    {
     "ParticipantIdentifier":"MDH-123",
     "CivilStartDate":"2025-06-01T00:00:00",
     "CivilEndDate":"2025-06-02T00:00:00",
     "ParticipantID":"11111111-aaaa-1111-1111-111111111111",
     "ModifiedDate":"2025-01-01T05:00:01Z"
    }