Thyroid Stimulating Hormone
TSH is produced by the pituitary gland to stimulate the thyroid to produce thyroid hormones.
By BodyOS
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Conventional Range
0.4 - 4.0 mIU/L
Optimal Range
1.0 - 2.5 mIU/L
Why It Matters
TSH is the most sensitive marker for thyroid dysfunction. It rises when thyroid hormone is low and drops when it's high.
If Your Level Is High
High TSH usually indicates hypothyroidism (underactive thyroid), causing fatigue, weight gain, cold intolerance.
Possible Causes
- Hypothyroidism
- Hashimoto's thyroiditis
- Iodine deficiency
- Pituitary tumors
If Your Level Is Low
Low TSH suggests hyperthyroidism (overactive thyroid), causing anxiety, weight loss, rapid heartbeat.
Possible Causes
- Hyperthyroidism
- Graves' disease
- Excessive thyroid medication
How to Optimize
Thyroid disorders typically require medication. Ensure adequate iodine and selenium, manage stress, avoid thyroid disruptors.
Dietary Factors
- Iodine intake
- Selenium
- Goitrogens
- Gluten (for some)
Lifestyle Factors
- Stress
- Sleep
- Environmental toxins
Supplements That Affect This Marker
| Supplement | Effect | Strength | Dosage |
|---|---|---|---|
| Vitamin D3 | Modulates | Mild | 2,000-5,000 IU daily |