Hormone Health Hub: Expert Insights on Testing, Balance & Better Living — natural hormone support

Estrogen dominance is a common hormone imbalance linked to symptoms such as weight gain, mood swings, heavy periods, fatigue, hot flashes, anxiety, and low libido. Learn the causes of estrogen dominance, how hormone testing works, and natural ways to support hormone balance during reproductive years, perimenopause, and menopause.

Chronic stress, fatigue, anxiety, and poor sleep may be signs of cortisol imbalance. Learn how stress and sleep hormone testing — including the Cortisol Awakening Response (CAR) and diurnal cortisol rhythm — can identify HPA axis dysfunction and help uncover the root cause of burnout, energy crashes, and disrupted sleep.

Your gut microbiome plays a powerful role in regulating oestrogen levels. Discover what the estrobolome is, how dysbiosis can lead to oestrogen dominance, and how hormone testing can help.

One in eight women will be diagnosed with breast cancer in their lifetime. But many risk factors are modifiable — including hormone imbalance and excess weight. Discover the two most important actions women can take to reduce breast cancer risk, and how hormone testing can help identify hidden imbalances before they become a problem.

In 1999, Tina Mattern was diagnosed with breast cancer and faced a terrifying choice of conventional treatments. Instead, she discovered the work of Dr. David Zava and ZRT Laboratory, and chose a path of natural hormone balancing, saliva testing and lifestyle change. This is her story — and her happy ending.