Hypothyroidism in India: Symptoms, Diagnosis and Management

Thyroid Disorders: India's Hidden Epidemic

An estimated 42 million Indians suffer from thyroid disorders — the vast majority from hypothyroidism (underactive thyroid). Despite being easily diagnosed with a simple blood test and effectively treated, most cases go undetected for years. Women are 5-8 times more likely to develop hypothyroidism than men.

Understanding the Thyroid

The thyroid gland (butterfly-shaped, in the neck) produces hormones (T3 and T4) that regulate metabolism, heart rate, body temperature, and energy. The pituitary gland releases TSH (Thyroid Stimulating Hormone) to control thyroid output. In hypothyroidism, the thyroid is underactive — doesn't produce enough hormones.

Symptoms to Watch For

• Unexplained weight gain despite no change in diet
• Fatigue and excessive sleepiness even after adequate sleep
• Cold intolerance (feeling cold when others are comfortable)
• Constipation
• Dry skin, brittle nails, hair loss
• Brain fog, difficulty concentrating
• Depression, low mood
• Muscle weakness and joint pain
• Irregular or heavy periods (women)
• Slow heart rate

Diagnosis: The TSH Test

A simple fasting blood test measures TSH. Interpretation:

• Normal: 0.4-4.0 mIU/L (some labs use 0.5-5.0)
• Hypothyroidism: TSH >4.0-5.0 (with symptoms)
• Subclinical hypothyroidism: TSH elevated but T3/T4 normal
• Cost: ₹200-600 at diagnostic labs

If TSH is abnormal, doctor will also test Free T3, Free T4, and often TPO antibodies (to check for autoimmune cause — Hashimoto's thyroiditis is most common in India).

Treatment

Levothyroxine (synthetic T4) is the standard treatment — brand names Eltroxin, Thyronorm. Very affordable at ₹30-100/month. Take on an empty stomach, 30-60 minutes before breakfast. Never take with calcium, iron supplements, or antacids. TSH recheck every 6-8 weeks until stable, then annually.

Diet and Lifestyle

• Selenium-rich foods (help convert T4 to T3): Brazil nuts, sunflower seeds, eggs, tuna
• Iodine: use iodized salt, include dairy
• Limit raw cruciferous vegetables (broccoli, cauliflower) — cooking neutralizes goitrogens
• Avoid soy products within 4 hours of medication
• Regular exercise improves thyroid hormone sensitivity