The final chapter looks at keeping oestrogen in balance and when to seek medical support. It explains how sleep, weight and stress can affect hormone levels, and the difference that balanced nutrition and simple lifestyle changes can make. Readers learn which persistent symptoms may point to an imbalance, including signs that someone over 40 may be entering perimenopause. The chapter covers the value of regular check-ups and blood tests during life changes such as puberty and menopause, and introduces treatment options such as hormone replacement therapy, which a healthcare provider can tailor to individual needs. It closes by recapping oestrogen's influence on wellbeing.