Cramps, thirst, fatigue: When your body may be signalling a blood sugar problem

Cramps, thirst, and fatigue could be warning signs of a blood sugar problem, according to a dietician and diabetes educator. When blood sugar levels fluctuate, the body loses fluids and essential minerals like sodium, potassium, and magnesium through increased urination. These minerals are crucial for muscle function, and their absence can cause muscles to cramp, especially at night or after exercise.

High glucose levels over time can also damage small nerves that control muscle signalling, a condition called neuropathy, which makes cramps more frequent and harder to explain.

People with diabetes or those at risk of developing metabolic problems are more likely to experience cramps due to the combination of dehydration, mineral loss, nerve changes, and circulation issues. A balanced diet can sometimes mask these nutrient losses. Recurrent cramps, particularly in the calves or feet, should not be dismissed as mere tiredness or dehydration. Instead, they warrant a closer examination of blood sugar regulation.

Persistent cramps lasting more than two to three weeks, particularly those that disturb sleep or are accompanied by symptoms like excessive thirst, fatigue, slow-healing wounds, or tingling in the feet, should prompt a medical evaluation. A doctor may order tests such as fasting glucose, HbA1c, and electrolytes to assess blood sugar control and identify any underlying issues.