Persistent Fatigue: When Tiredness Signals a Health Problem

Feeling exhausted during the day, waking up tired, and a general lack of energy are common complaints. But, long-lasting fatigue is often more than just tiredness. it can be a sign of underlying health issues. Understanding the causes of fatigue and adopting effective strategies to combat it is crucial for maintaining overall well-being.

Is Fatigue a Symptom, Not a Disease?

According to Assoc. Prof. Dr. Rıdvan Sivritepe, an internal diseases specialist at Istanbul Medipol University , fatigue isn’t a disease in itself, but a potential early symptom of several conditions. “Persistent fatigue may be the first sign of anemia, thyroid disorders, diabetes, vitamin-mineral deficiencies, or chronic infections. Prolonged fatigue must be evaluated medically,” he states.

Common Causes of Fatigue

• Anemia: A deficiency in red blood cells can lead to fatigue.
• Thyroid Disorders: Both hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid) can cause fatigue.
• Diabetes: High blood sugar levels can result in fatigue.
• Vitamin and Mineral Deficiencies: Low levels of iron, vitamin B12, and vitamin D are frequently linked to fatigue.
• Chronic Infections: Ongoing infections can drain energy levels.

The Role of Vitamin and Mineral Deficiencies

Assoc. Prof. Sivritepe emphasizes that vitamin and mineral deficiencies are among the most common causes of fatigue. “Iron deficiency, low vitamin B12 and D levels are the most common and easily treatable causes of fatigue. However, the apply of supplements should be planned according to blood tests, not randomly.” Blood tests can accurately identify specific deficiencies, allowing for targeted supplementation.

How Sleep Impacts Energy Levels

Sleep quality directly affects energy levels. Irregular sleep schedules and exposure to screens before bed can disrupt the body’s natural rhythms. “Exposure to the screen until late hours, irregular sleeping hours and interrupted sleep cause us to perceive sluggish throughout the day. Sleeping and waking up at the same time every day increases the energy level by regulating the biological rhythm,” explains Assoc. Prof. Dr. Sivritepe.

Nutrition and Fatigue

Eating habits play a significant role in energy levels. Consuming a diet high in simple carbohydrates can lead to rapid energy fluctuations. “Irregular meals heavy on simple carbohydrates cause sudden energy drops during the day. A balanced diet rich in protein, fiber and healthy fats significantly reduces complaints of fatigue,” notes Assoc. Prof. Dr. Sivritepe.

The Importance of Physical Activity

Despite the inclination to rest when fatigued, inactivity can actually worsen the problem. “Although it may seem like a paradox, regular and light-moderate exercise strengthens the body’s energy production mechanisms. Even brisk walking at least 3 days a week significantly increases the energy level,” says Assoc. Prof. Dr. Sivritepe.

When to Seek Medical Attention

Assoc. Prof. Dr. Sivritepe emphasizes that fatigue is an important warning signal from the body. “Weakness is not a disease on its own. If it becomes permanent, the underlying cause must be investigated and the treatment must be planned individually. Correct diagnosis and correct treatment are the healthiest approach, instead of random supplements.” It’s crucial to consult a doctor for persistent fatigue to determine the root cause and receive appropriate treatment.

Dr. Rıdvan Sivritepe is an Associate Professor of Internal Medicine at Istanbul Medipol University. He has authored and co-authored numerous publications, including research on frailty and treatment compliance in diabetic and geriatric patients.