Techniques are provided for data analysis and user guidance for determining and providing one or more treatments to a user based on a location of the user in or to be in its menstrual cycle. In certain embodiments, a method of personalizing diabetes treatment based on information related to a user's menstrual cycle is provided. The method includes measuring a blood glucose measurement of a user using a glucose monitoring system. The method also includes receiving information related to a menstrual cycle of the user. The method further includes determining a treatment of the user based on at least one of historical data associated with the user and historical data associated with the hierarchical group to achieve a target blood glucose during a sub-stage or stage of a menstrual cycle of the user.