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
Diabetes
Depression and anxiety
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.

When to See a Doctor

Fatigue lasting more than 2 weeks with no obvious cause
With unexplained weight loss
With shortness of breath or chest pain
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

When home care is not enough: chest pain, trouble breathing, confusion, or symptoms that worsen quickly need urgent medical attention.

Warning Signs First Aid at Home

This article is for general educational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare provider for your specific situation. Last reviewed: March 2026. Read our full Medical Disclaimer.