Fatigue — persistent tiredness not relieved by rest — can have dozens of causes, from poor sleep to anaemia to thyroid disorders. Understanding the cause is the first step to effective treatment.
Common Causes
- Poor sleep quality or insufficient sleep — most common cause
- Iron deficiency anaemia — extremely common in Indian women
- Vitamin D deficiency — widespread across India
- Vitamin B12 deficiency — especially in vegetarians
- Hypothyroidism
- and
- Chronic stress and burnout
- Dehydration
- Sedentary lifestyle
- Post-viral fatigue after COVID or dengue
Home Care and Relief
Prioritise sleep quality
7–9 hours per night. Keep consistent sleep times, sleep in a dark cool room, avoid screens 1 hour before bed. Poor sleep quality is the most reversible cause of fatigue.
Get blood tests done
If fatigue persists for more than 2 weeks: CBC (for anaemia), Vitamin D, Vitamin B12, thyroid (TSH), and fasting blood sugar. These four tests identify the majority of correctable causes.
Address iron deficiency
Iron-rich foods: meat, fish, spinach, amaranth, rajma, chana, tofu. Take vitamin C with iron-rich foods to enhance absorption. Avoid tea and coffee with meals.
Vitamin D and B12 supplementation
Both deficiencies are extremely common and cause profound fatigue. If confirmed by blood test, supplementation often produces dramatic improvement within weeks.
Exercise regularly
30 minutes of brisk walking daily increases energy levels over time by improving cardiovascular efficiency. Start gently.
Stay hydrated
Drink 2.5–3 litres of water daily. Even mild dehydration causes significant fatigue.
Eat regular balanced meals
Include protein with every meal (eggs, dal, curd, paneer, pulses) for sustained energy. Avoid skipping meals.
Manage stress
10 minutes of daily meditation, journaling, reducing news consumption, and setting work boundaries help manage adrenal exhaustion.
Clinical guidance from NIMH[1] stresses matching home care to symptom severity and seeking urgent review when red-flag signs appear.
When to See a Doctor
- Fatigue lasting more than 2 weeks with no obvious cause
- With unexplained weight loss
- With or
- With frequent urination and thirst
- With cold intolerance or hair loss
- With persistent low mood and loss of interest
- After viral illness not improving over weeks
Related Guides
For verification and deeper reading, NHS[2] offers independent, evidence-based information you can cross-check with your own clinician.
References & further reading
Sources cited in this guide. DIMH links to independent medical institutions for verification — not as a substitute for personal medical advice.
- NIMH — Mental health informationhttps://www.nimh.nih.gov/health
- NHS — Mental healthhttps://www.nhs.uk/mental-health/
- NHS — Tiredness and fatiguehttps://www.nhs.uk/live-well/sleep-and-tiredness/why-am-i-tired-all-the-time/
- NIH — Fatiguehttps://www.cancer.gov/about-cancer/treatment/side-effects/fatigue
- MedlinePlus — trusted health information (NIH)https://medlineplus.gov/
- World Health Organization — health topicshttps://www.who.int/health-topics
When home care is not enough: chest pain, trouble breathing, confusion, or symptoms that worsen quickly need urgent medical attention.