Blood sugar levels can fluctuate for many reasons

Several factors can contribute to high blood sugar (hyperglycemia) in people with diabetes, including food and physical activity choices, some medications, and skipping or not taking enough glucose-lowering medication. In addition, illness, injury, surgery, stress, menses and menopause, can influence blood sugar levels.

Physical or emotional stress triggers the release of hormones that can cause high blood sugar levels. For women, menstruation and menopause cause hormonal changes that affect blood sugar levels.

Regular blood sugar testing will expose patterns and help you and your health care team to control your diabetes. If you experience persistent hyperglycemia, talk with your team about adjusting your diabetes treatment.

Last Updated May 16, 2018


Content from Mayo Clinic ©1998-2019 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved. Terms of Use