Blog — energy and hormones

Hormones influence everything from energy and mood to weight, sleep, skin, and long-term health — yet imbalances often go unnoticed. This in-depth guide explains how hormones work, the most common signs of imbalance, and why testing is essential for understanding your body. Learn how cortisol, thyroid hormones, estrogen, progesterone, testosterone, and insulin shape your wellbeing, and discover practical steps to restore balance naturally through personalised testing, nutrition, lifestyle changes, and targeted support. This is your complete roadmap to understanding and improving your hormonal health.

The UK is facing a growing obesity crisis, with two-thirds of adults and a rising number of children classified as overweight or obese. A recent UK Parliament briefing highlights alarming trends, including regional and ethnic disparities and increased risks linked to socioeconomic status. While public health strategies continue to evolve, addressing the hormonal root of weight gain may offer a more effective, personalized solution. ZRT Laboratory’s Weight Management Profile helps uncover hidden hormonal imbalances—such as elevated cortisol, low testosterone, or thyroid dysfunction—that contribute to stubborn fat gain, poor metabolism, and increased disease risk.

Discover how saliva and blood cortisol testing reveal adrenal function and help diagnose stress-related hormone imbalances like fatigue, anxiety, and burnout.