Feeling tired all the time is not normal and can signal an underlying health issue. Identifying the root cause is essential to regain energy and improve quality of life.
Adults need 7–9 hours of sleep per night, but quality matters as much as quantity. If you wake up unrefreshed despite 8 hours in bed, you may have sleep apnea or another sleep disorder. Track your sleep for two weeks to identify patterns.
Iron deficiency affects up to 5% of adults and is a leading cause of fatigue, especially in women. Vitamin B12 and vitamin D deficiencies also cause tiredness. A simple blood test can check for these; aim for ferritin levels above 30 ng/mL.
Hypothyroidism, diabetes, and depression are common medical causes of fatigue. If you have other symptoms like weight changes or low mood, see a doctor. Thyroid-stimulating hormone (TSH) levels above 4.0 mIU/L may indicate an underactive thyroid.
The most common mistake is assuming tiredness is just part of a busy life and ignoring it for months. Persistent fatigue lasting more than two weeks warrants a medical evaluation.
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If fatigue lasts more than two weeks and interferes with daily activities, see a doctor. Also seek help if you have symptoms like shortness of breath, unexplained weight loss, or fever.
Ask for a complete blood count (CBC), ferritin, vitamin B12, vitamin D, and thyroid function tests. These cover the most common nutritional and medical causes of fatigue.
Yes, chronic stress can lead to fatigue by disrupting sleep and increasing mental exhaustion. If stress is a factor, consider relaxation techniques or counseling.
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