Blog — estrogen

  By Dr. Zane Hauck, ZRT Laboratory Growing up, I never thought of myself as a runner, or really a good athlete in general. I played every sport possible as a kid, but I was never great and didn’t play high school sports. As an adult, I started playing team sports again and eventually was convinced to run a 5k. I ended up running the Warrior Dash and enjoyed it, so I continued doing 3.2-mile training runs. For the rest of my 20s I continued running 5k races with friends and played volleyball, softball, and some casual intramural sports, but...

PMS and PMDD are more than hormonal mood swings—they are complex neuroendocrine conditions driven by interactions between sex hormones and neurotransmitters like serotonin, GABA, and cortisol. This article explains the science behind menstrual mood disorders and highlights how advanced hormone and neurotransmitter testing from Hormone Lab UK and ZRT Laboratory can help identify imbalances and guide personalised treatment.

Explore the vital role of estrogen in perimenopause, its impact on mood, sleep, heart and bone health, and the latest research on hormone therapy options.

Infertility is an increasingly common issue, affecting over 22% of married women who struggle to conceive or carry a pregnancy to term. While physical causes like anovulation, tubal damage, or endometriosis account for many cases, hormonal imbalances are often overlooked yet highly treatable contributors to infertility. The ZRT Fertility Profile offers a comprehensive and convenient way to evaluate hormone levels that are essential for conception and pregnancy maintenance. By testing markers like FSH, LH, estradiol, progesterone, testosterone, thyroid hormones, and cortisol, this profile helps identify conditions such as ovarian insufficiency, luteal phase deficiency, PCOS, thyroid dysfunction, and stress-related hormonal disruption. Samples can be collected easily at home through fingerstick blood and saliva on specific days of the menstrual cycle, ensuring accurate and timely results. Early identification of hormonal imbalances empowers women to take corrective action—often through simple lifestyle changes or targeted therapies—before turning to more invasive fertility treatments. Whether you’ve been trying to conceive without success, experienced recurrent miscarriages, or are planning ahead for pregnancy, ZRT’s Fertility Profile provides critical insights to help you and your healthcare provider take proactive steps toward reproductive health and success.

By Dr.Tracy Tranchitella, ND-ZRT Laboratory Non-Alcoholic Fatty Liver Disease (NAFLD) has become a primary cause of chronic liver disease, impacting a large portion of the global population. NAFLD is characterized by the buildup of excess fat in the liver, unrelated to alcohol use, and is strongly associated with metabolic syndrome—a group of conditions that raise the risk of heart disease, stroke, and diabetes. Factors contributing to metabolic syndrome may also play a role in the development of NAFLD, but underlying endocrine disorders can further drive the onset and progression of this widespread liver condition. Moreover, environmental and chemical toxins may...