Thyroid & Metabolism

ApoB counts the artery-clogging particles a standard cholesterol test misses. Why ‘normal’ cholesterol can still hide heart risk, and what to test in Adelaide.

TSH is a pituitary signal, not a measure of thyroid hormone at the cell. T4-to-T3 conversion can fail in the liver, kidneys or gut while TSH stays normal.

Why Your Metabolism Slows When You Diet — Dieting drops your resting metabolic rate 15–25% within weeks. A 2023 trial showed zinc + selenium co-supplementation raised RMR by 22.9% during an 8-week hypocaloric diet while placebo fell.

Hashimoto’s is an autoimmune attack on the thyroid driven by anti-TPO antibodies. What a functional approach adds alongside levothyroxine, and what drives it.

Low vitamin D, magnesium, iodine or iron may stall weight loss by slowing metabolism, hormone signalling and mitochondrial energy. Which ones to check first.

Thyroid dysfunction can drive anxiety, panic and low mood even when TSH comes back normal. The hormone-brain link, and the markers TSH on its own misses.

Thyroid symptoms can persist with a normal TSH. How T4 to T3 conversion, selenium and zinc status, and gut bacteria each shape what your thyroid delivers.

Author: Rohan Smith | Functional Medicine Practitioner | Adelaide, SA Quick Answer Thyroid disorders in children, including congenital hypothyroidism, Hashimoto’s thyroiditis, and Graves’ disease, can impair growth, neurodevelopment, and emotional regulation. Thyroid-stimulating hormone (TSH) and free thyroxine (free T4) testing may identify dysfunction early. Standard medical treatment remains essential, while supportive functional medicine strategies addressing…

Chronic stress may slow your thyroid. High cortisol can block T4 to T3 conversion and raise reverse T3, producing hypothyroid symptoms alongside a normal TSH.

TSH alone can miss thyroid disease. Free T3, Free T4, reverse T3 and anti-TPO antibodies reveal conversion problems and Hashimoto’s that screening skips.