Glucose Explained
What Can Affect a Blood Glucose Reading?
Meals, activity, stress, sleep, illness, medication, testing technique and timing can all affect glucose readings.
Health note: This page is educational and does not diagnose, treat, cure or prevent disease. Supplements can interact with medicines and may not be appropriate for everyone. If you use glucose-lowering medication, are pregnant or breastfeeding, or have a medical condition, discuss supplements with a qualified health professional.
Common influences
- Meal composition and timing
- Physical activity
- Stress hormones
- Sleep disruption
- Illness
- Medication
- Testing technique and device limitations
Avoid overreacting to one number
Patterns and clinical context usually matter more than a single unexpected value.