A blood glucose measurement apparatus comprising: a glucose detection unit configured to detect a glucose concentration in a body fluid other than a blood in the form of sweat, tears, saliva, or interstitial fluid of a user based on a first glucose concentration measurement interval; a temperature sensor configured to measure a body temperature: and a control unit configured to: determine a first blood glucose level of the user based on a first glucose concentration detected at the first measurement interval by correcting the first glucose concentration based on a pattern of a difference between a glucose concentration in the body fluid and the glucose concentration in the blood; determine whether an amount of hormones has changed based on the information received from the temperature sensor, by determining that a body temperature measured by the temperature sensor has increased or decreased by 1°C, wherein the hormones is one of estrogen, progesterone, or a growth stimulating hormone; change a glucose concentration measurement interval of the glucose detection unit from the first measurement interval to a second measurement interval according to data related to an occurrence of an event, wherein said event is the determination that an amount of hormones has changed; and determine a second blood glucose level of the user based on a second glucose concentration detected at the second measurement interval by correcting the second glucose concentration based on the pattern of a difference between a glucose concentration in the body fluid and the glucose concentration in the blood. a glucose detection unit configured to detect a glucose concentration in a body fluid other than a blood in the form of sweat, tears, saliva, or interstitial fluid of a user based on a first glucose concentration measurement interval; a temperature sensor configured to measure a body temperature: and a control unit configured to: determine a first blood glucose level of the user based on a first glucose concentration detected at the first measurement interval by correcting the first glucose concentration based on a pattern of a difference between a glucose concentration in the body fluid and the glucose concentration in the blood; determine whether an amount of hormones has changed based on the information received from the temperature sensor, by determining that a body temperature measured by the temperature sensor has increased or decreased by 1°C, wherein the hormones is one of estrogen, progesterone, or a growth stimulating hormone; change a glucose concentration measurement interval of the glucose detection unit from the first measurement interval to a second measurement interval according to data related to an occurrence of an event, wherein said event is the determination that an amount of hormones has changed; and determine a second blood glucose level of the user based on a second glucose concentration detected at the second measurement interval by correcting the second glucose concentration based on the pattern of a difference between a glucose concentration in the body fluid and the glucose concentration in the blood. determine a first blood glucose level of the user based on a first glucose concentration detected at the first measurement interval by correcting the first glucose concentration based on a pattern of a difference between a glucose concentration in the body fluid and the glucose concentration in the blood; determine whether an amount of hormones has changed based on the information received from the temperature sensor, by determining that a body temperature measured by the temperature sensor has increased or decreased by 1°C, wherein the hormones is one of estrogen, progesterone, or a growth stimulating hormone; change a glucose concentration measurement interval of the glucose detection unit from the first measurement interval to a second measurement interval according to data related to an occurrence of an event, wherein said event is the determination that an amount of hormones has changed; and determine a second blood glucose level of the user based on a second glucose concentration detected at the second measurement interval by correcting the second glucose concentration based on the pattern of a difference between a glucose concentration in the body fluid and the glucose concentration in the blood.