Hormone Health Hub: Expert Insights on Testing, Balance & Better Living

An FDA-approved testosterone gel was shown to significantly increase cardiovascular risk in older men — but does this mean testosterone therapy is dangerous? ZRT Laboratory’s research suggests the real problem lies in how testosterone is measured. Venous serum testing dramatically underestimates tissue exposure to topical testosterone, leading to pharmacological overdosing that goes undetected. This article explains why the testing method matters as much as the dose.

Vitamin D is not just a vitamin — it is a steroid hormone that plays a critical role in fertility, conception, placental development and fetal health. From improving ovulation in women with PCOS to supporting sperm motility in men, adequate vitamin D levels matter at every stage of the journey to parenthood. Discover why testing before and during pregnancy is increasingly recommended.

Persistent skin problems — from acne and dryness to unwanted hair growth and premature wrinkling — are often rooted in hormone imbalance. Oestrogen, testosterone, DHT, progesterone, thyroid hormones, cortisol and vitamin D all play distinct roles in skin health. This article explains the connections and how hormone testing can help identify the underlying cause.

The decline in oestrogen, progesterone and testosterone as we age is one of the primary drivers of skin thinning, wrinkling, dryness and loss of elasticity. But hormones affect skin in more ways than most people realise — from DHT-driven acne and unwanted hair growth to the risks of over-supplementation. This article explains the key hormonal connections to skin wellness and how targeted testing can guide safe, effective hormone use.

Iodine is an essential component of thyroid hormones T3 and T4, and plays a broader role in antioxidant defence and breast health. Yet many people are unknowingly deficient. This guide covers the recommended daily allowances for different life stages, the best dietary sources of iodine — from kelp to cod — and when testing your iodine and thyroid levels may be warranted.