Understanding Glycemic Index

Glycemic index describes how carbohydrate-containing foods can affect blood glucose, but portion size, total carbohydrate and meal composition also matter.

Key points

• Use this article as general education, not a diagnosis.
• Individual needs differ; discuss medication, testing and targets with a qualified clinician.
• Seek urgent medical care for severe or rapidly worsening symptoms.

Medical note: This page is general health information and is not a substitute for individual medical assessment or treatment.