If you are one of the 3.4 million Arizonans living with diabetes or prediabetes, our extreme summer heat demands extra attention to your management plan. Heat affects blood sugar levels, medication effectiveness, and your body's ability to stay hydrated — all of which require adjustments during the hottest months.
How Heat Affects Blood Sugar
High temperatures cause blood vessels to dilate, which can speed up insulin absorption and lead to unexpected drops in blood sugar. At the same time, dehydration concentrates blood sugar levels, causing readings to spike. This double effect makes glucose management more unpredictable during Arizona summers.
Medication and Supply Storage
Insulin and many diabetes medications are temperature-sensitive. Never leave insulin, test strips, or glucose monitors in a parked car — interior temperatures in Arizona can exceed 170 degrees Fahrenheit. Use insulated cases for transport and store medications in a cool, dry place at home. If insulin looks cloudy or discolored, do not use it.
Hydration Is Non-Negotiable
People with diabetes are more susceptible to dehydration, and dehydration worsens blood sugar control. Aim for at least 8-10 glasses of water daily during summer months — more if you are active outdoors. Avoid sugary drinks and alcohol, which compound dehydration. Signs of dehydration include dark urine, dizziness, dry mouth, and fatigue.
Exercise Adjustments
Exercise remains essential for diabetes management, but timing matters in Arizona. Move outdoor activities to early morning (before 7 AM) or evening (after 7 PM). Indoor exercise — walking in a mall, swimming, gym workouts — is a practical alternative during peak heat. Always carry glucose tablets and water.
When to Call Your Doctor
Contact our office if you experience persistent blood sugar readings above 300 mg/dL, signs of heat exhaustion (nausea, rapid heartbeat, confusion), frequent hypoglycemic episodes during hot weather, or any changes in your diabetes symptoms. We can adjust your care plan to account for seasonal factors.