Hypothyroidism

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Hypothyroidism — Holistic Approaches & Practitioners | Gyfts

Frequently Asked Questions

What is Hashimoto's thyroiditis and how does it cause hypothyroidism?

Hashimoto's thyroiditis is an autoimmune condition in which the immune system produces antibodies (particularly anti-TPO and anti-thyroglobulin) that gradually destroy thyroid tissue over years or decades. It is the most common cause of hypothyroidism in iodine-sufficient countries, affecting approximately 5% of the population and predominantly women. The thyroid may enlarge (goitre) in the early stages. As thyroid tissue is progressively destroyed, hormone production declines, eventually causing clinical hypothyroidism requiring medication.

Is levothyroxine the only medication for hypothyroidism?

Levothyroxine (synthetic T4) is the standard first-line treatment for hypothyroidism. However, some people continue to experience symptoms (particularly fatigue, brain fog, and mood changes) despite normal TSH on levothyroxine — possibly because they convert T4 to T3 suboptimally. For these individuals, combination T4/T3 therapy (adding liothyronine) or desiccated thyroid extract (which contains both T4 and T3 naturally) may be considered. Combination therapy is not universally available on the NHS but can be prescribed by specialist endocrinologists when standard therapy is clearly insufficient.

What factors interfere with levothyroxine absorption?

Several substances significantly impair levothyroxine absorption and should not be taken within 2–4 hours of the medication: calcium supplements, iron supplements, antacids containing aluminium or magnesium, high-fibre foods, coffee, and certain cholesterol-lowering medications (cholestyramine). Levothyroxine is ideally taken on an empty stomach 30–60 minutes before breakfast, or at bedtime if morning dosing is problematic. Consistency in timing and food interactions is important for stable thyroid hormone levels.

Why might thyroid symptoms persist despite normal TSH levels?

TSH within the reference range does not guarantee optimal thyroid function for every individual — the range is population-based, not personalised. Suboptimal conversion of T4 to T3 (the active hormone) can occur despite normal TSH, particularly with selenium or zinc deficiency, chronic stress, inflammation, or certain medications. The TSH target also matters — many people feel best when TSH is in the lower part of the reference range (0.5–1.5 mIU/L) rather than simply within range. Free T3 measurement provides more direct information about active hormone availability.

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Overview

Symptoms & Affected Systems

Contributing Factors

Supporting Lifestyle Strategies

Evidence Context

When to Seek Professional Help

Related Conditions

Hormonal Imbalance

Thyroid Imbalance

Reactive Hypoglycaemia

Type 2 Diabetes

Frequently Asked Questions