Capillaries are tiny blood vessels that connect your arteries and veins, allowing an exchange of nutrients and gases.| Cleveland Clinic
Cleveland Clinic advertising supports our core mission and helps us improve our site as a resource for trusted health content. Learn how to advertise with Cleveland Clinic.| Cleveland Clinic
Hypoglycemia, or low blood sugar, is common in people with diabetes. Learn how to treat it and prevent it.| Cleveland Clinic
Hyperglycemia happens when there’s too much sugar (glucose) in your blood.| Cleveland Clinic