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Symptoms of hypothyroidism
Extreme fatigue: you sleep for 10 hours and wake up exhausted. The extremely slow metabolism prevents real recovery.
Unexplained weight gain: You eat the same amount but your metabolism burns up to 30% fewer calories.
Hair loss: Low thyroid hormone slows down the hair growth cycle. More hair in the shower.
Constant cold: Your body doesn’t generate enough heat. You need a sweater when others are wearing short sleeves.
Cloudy mind and memory problems: thyroid hormone directly affects brain function.
Dry skin and constipation: the whole system slows down, including skin and digestion.
Depression: thyroid hormone affects neurotransmitters such as dopamine and serotonin.
Irregular menstrual cycle: in women, the cycle becomes unpredictable or stops.
The causes of hypothyroidism
Hashimoto’s disease (autoimmune): the most common cause: the immune system progressively attacks the thyroid gland . More common in women over 40.
Iodine or selenium deficiency: the thyroid needs both minerals to function.
Previous thyroid surgery or radiation.
Medications: amiodarone, lithium, some antidepressants.
Chronic stress: depletes the thyroid axis over time.
Hyperthyroidism: The Rapid Thyroid (Less Common But Serious)
Hyperthyroidism accounts for 20% of thyroid problems. Symptoms include palpitations, paradoxical fatigue, weight loss, heat intolerance, anxiety, and tremors . It is most common in women between the ages of 20 and 50.
The most common cause is Graves’ disease (an autoimmune disorder), followed by autonomous thyroid nodules and thyroiditis. If you suspect hyperthyroidism, see a doctor without delay —persistent palpitations can lead to arrhythmia.
How to Diagnose It (The Test That Solves Everything)
You don’t need to understand all the biochemistry. Your doctor will do a blood test to measure your TSH — the hormone that tells your thyroid to produce more or less.
The normal range for TSH in adults is 0.4 to 4.0-4.5 mIU/L. High TSH indicates hypothyroidism; low TSH indicates hyperthyroidism .
High TSH → hypothyroidism (your body is trying to stimulate a sluggish thyroid).
Low TSH → hyperthyroidism (your body is trying to slow down an overactive thyroid).
If you have symptoms, ask for a TSH test . It’s simple, inexpensive, and definitive.
Natural Remedies for Hypothyroidism with Scientific Backing
Remedy 1: Selenium (The Most Evidenced)
A 2025 meta-analysis of 21 studies involving 1,610 Hashimoto’s patients demonstrated that selenium supplementation significantly reduces TPOAb and TgAb antibodies at 3 months of treatment . Selenium is an essential component of the enzyme that converts T4 to T3, the active form of the hormone.