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What Is The Normal Range Of TSH Amongst Men And Women?

Unlock the secrets of thyroid health with a comprehensive guide to Thyroid Stimulating Hormone (TSH) levels. From normal ranges across ages to gender-specific considerations, this guide illuminates the critical indicators of thyroid function. Whether it's high TSH signaling hypothyroidism or low TSH indicating hyperthyroidism, empower yourself with insights for a balanced and healthier life. Consult with healthcare professionals for personalized advice and routine thyroid screenings.

  • 22 Nov 2023
  • 3 min read

Thyroid health is a fundamental aspect of our overall well-being and a critical indicator is the Thyroid Stimulating Hormone (TSH) level. The pituitary glands produce this hormone to regulate thyroid activity. Although the TSH range generally remains stable, variations can arise due to factors such as age, gender, and specific medical conditions.

High TSH levels: Elevated TSH levels often signal an underactive thyroid gland (hypothyroidism). This means the thyroid isn't producing enough hormones, leading to symptoms such as weight gain, sensitivity to cold, and fatigue.

Low TSH levels: This can point to an overactive thyroid gland (hyperthyroidism) where excessive hormone production occurs. Symptoms may include anxiety, weight loss and rapid heart rate.

TSH levels for different individuals

Here’s a glimpse of the normal TSH levels by age:


Age Group

TSH Normal Range (mIU/L)


In the first few days of life, TSH levels can be higher, ranging from 1.0 to 39.0 mIU/L. These levels gradually stabilise as the baby adapts to its external environment.

1-6 months

TSH levels range from 0.6 to 10.0 mIU/L for babies.

6 months-1 year

TSH levels range from 0.5 to 7.0 mIU/L for infants between the ages of 6 months to 1 year.


As children grow, TSH levels remain within the range of 0.7 to 6.4 mIU/L. These values reflect the thyroid's ongoing development and maturation.


TSH levels range from 0.4 to 4.0 mIU/L for teenagers.


The general normal TSH range for adults is 0.5 to 4.1 mIU/L. This range is typically an indication of the optimal functioning of thyroid and overall hormonal balance.

Pregnant women

TSH levels range from 0.6 to 4.0 mIU/L.

Elderly adults

For older individuals, TSH levels may slightly increase, ranging from 0.4 to 5.2 mIU/L. Age-related changes can influence this variation in thyroid function.

Also read:

TSH levels in women

TSH normal range for females typically falls within the range of 0.5 to 5.0 mIU/L. However, TSH levels can fluctuate due to factors such as hormonal changes during the menstrual cycle and pregnancy. Pregnancy also causes hormonal fluctuations. During the first trimester, TSH levels can decrease, ranging from 0.2 to 3.5 mIU/L. This is considered normal as there’s an increase in thyroid activity. As the pregnancy progresses, TSH levels usually go back to the general adult range. It is essential for pregnant women to work closely with healthcare providers to monitor TSH levels and ensure optimal thyroid health for both mother and baby.  

TSH levels in men

Normal TSH levels in males are usually relatively stable, falling within the general adult range of 0.5 -5.49 mIU/L. However, it’s important to know that any significant deviation from this range might warrant medical attention. Regular checkups can identify any potential thyroid-related issues early on, ensuring prompt intervention if needed.

The takeaway

Understanding the thyroid normal range in females and males is essential for preserving thyroid health and overall well-being. While the typical range for adults is 0.4-4.0 mIU/L, it's crucial to take individual factors into account, such as age, gender, and specific medical conditions. For pregnant women, and individuals dealing with thyroid cancer or pituitary gland disease, the ideal TSH range may vary. It’s important to seek the guidance of an endocrinologist for the same. Routine thyroid screening and consultations with a doctor are fundamental to ensuring that TSH levels are well-maintained, contributing to a healthier and more balanced life.

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