Hormone Health Hub: Expert Insights on Testing, Balance & Better Living — estrogen deficiency symptoms

Cardiovascular disease is the leading cause of death in women, and the risk dramatically increases with menopause as estrogen levels decline. In this in-depth clinical article, Dr. Sherry LaBeck of ZRT Laboratory explains how estrogen protects the cardiovascular system through nitric oxide production, endothelial function, blood lipid regulation and anti-inflammatory mechanisms — and why the timing of estrogen replacement therapy is critical to its cardioprotective effect.

Hot flashes, mood instability, brain fog and memory changes during perimenopause are not “all in your head” — but they are very much in your brain. In this in-depth clinical article, Dr. Kate Placzek of ZRT Laboratory explains how declining estradiol disrupts brain glucose metabolism, neurotransmitter signalling and thermoregulation, why perimenopause represents a window of neurological vulnerability, and why the timing of hormone replacement therapy is critical to protecting long-term brain health.

The gut microbiome and estrogen are more closely connected than most people realise. As estrogen declines in menopause, microbial diversity falls with it — triggering a cascade of metabolic consequences including weight gain, abdominal fat, inflammation and reduced insulin sensitivity. Dr. Kate Placzek explores the science behind the estrobolome and explains why supporting both gut health and hormone balance is essential for metabolic wellbeing in menopause.

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.