Diabetes is a long-term metabolic condition in which the body either fails to produce enough insulin or cannot use it effectively. This leads to high blood sugar levels, preventing the body’s cells from using energy properly. The disease is mainly divided into two types — Type 1 and Type 2. In Type 1 diabetes, the immune system attacks the insulin-producing cells of the pancreas. In Type 2 diabetes, the body becomes resistant to insulin or produces less of it. Common causes include obesity, unhealthy eating habits, lack of exercise, stress, and genetic factors.

According to health experts, there is a strong two-way connection between diabetes and sleep. High blood sugar levels can lead to frequent thirst, dehydration, and excessive urination, all of which disturb sleep at night. Conversely, low blood sugar levels can cause symptoms like restlessness, anxiety, sweating, and a rapid heartbeat, making it hard to fall or stay asleep.

Studies have shown that poor sleep affects the hormones that control appetite, leading to overeating and weight gain — a major trigger for Type 2 diabetes. This creates a cycle where disturbed sleep worsens blood sugar control, and uncontrolled blood sugar further disrupts sleep patterns.

What experts say
Dr. Subhash Giri from the Department of Medicine, RML Hospital, explains that many diabetes patients suffer from Obstructive Sleep Apnea (OSA) — a condition where breathing repeatedly stops during sleep. This results in reduced oxygen supply, restless sleep, and persistent daytime fatigue. Around half of people with Type 2 diabetes experience OSA.

Another common issue among diabetics is Restless Legs Syndrome (RLS), especially in those with nerve damage or iron deficiency. This condition causes a burning, tingling, or uneasy sensation in the legs, making it difficult to fall asleep.

High blood sugar and insulin resistance also increase the levels of stress hormones, which can cause insomnia — difficulty falling or staying asleep. Poor sleep then worsens glucose regulation, forming a vicious cycle.

Tips to improve sleep for diabetes patients

• Avoid eating heavy meals or snacking late at night.

• Maintain a consistent bedtime and wake-up time daily.

• Stay away from screens (phones, laptops, TV) at least an hour before bed.

• Keep your bedroom dark, quiet, and comfortable.

• If sleep problems persist, consult a doctor and get tested for sleep disorders.