Heat waves are more dangerous for people with diabetes and high blood pressure. Dehydration from sweating can raise blood sugar in people with diabetes and can sharply lower blood pressure in people with high blood pressure. In particular, older adults with diabetes have a higher risk of developing heat-related illnesses due to impaired body temperature regulation and should refrain from outdoor activities. People with high blood pressure should be aware of dehydration and drink plenty of water rather than supplementing with salt. It is important for people with chronic diseases to pay attention to fluid intake during heat waves, reduce outdoor activities, and maintain an appropriate indoor temperature.
