As a nutritionist specialising in hormonal health, Marina Wright has worked with hundreds of women experiencing the same cluster of symptoms: weight gain, brain fog, anxiety, insomnia, fatigue, aches and pains. The underlying culprit: chronic stress. Your body's natural stress response triggers the hormone cortisol, to enable you to respond quickly to challenges.

But in modern life, our stress response can be firing too often, or simply not know how to switch off. Here's where The Cortisol Re...