Experts Highlight Multiple Factors Beyond Diet Affecting Blood Sugar Control in Diabetes

While diet is commonly seen as the primary factor in managing diabetes, recent insights emphasize that blood sugar levels are influenced by many other elements, some unrelated to food. Professor Julio Weinstein, head of the Diabetes Research Unit at Wolfson Medical Center and vice president of the Israeli Diabetes Association, explains that summer conditions illustrate this complexity well. Factors such as weather, physical activity, dehydration, and changes in routine can all impact blood sugar regulation.

Extreme heat can cause dehydration, which both raises blood sugar levels and is exacerbated by high glucose causing fluid loss through urine, according to the U.S. Centers for Disease Control and Prevention. Summer heat can cause blood sugar to rise or fall unpredictably due to dehydration and increased physical activity or altered insulin use. Symptoms like fatigue, dizziness, and thirst common in summer may also signal blood sugar fluctuations, but these are not always easy to distinguish.

Contrary to popular belief, feeling well does not always mean blood sugar is balanced. People with diabetes may feel weak due to blood sugar changes rather than just heat or tiredness. Additionally, medical guidelines do not prohibit summer fruits such as watermelon, melon, peach, or grapes, but recommend personalized portion control.

Routine disruptions during holidays, family trips, or weekends, such as altered meal times, exercise, and sleep, further affect blood sugar management. Health organizations advise heightened vigilance during hot weather and schedule changes. Monitoring blood sugar levels provides a clearer picture than relying on subjective feelings, enabling better decisions about treatment and diet.

This evolving understanding marks a shift from assumptions to data-driven diabetes care. Recognizing the multiple factors influencing blood sugar beyond diet helps patients maintain health and confidence through seasonal and lifestyle changes.