Hananja Brice-Ytsma is a Fellow of the National Institute of Medical Herbalist, and has practised herbal medicine extensively in the UK working in private practice and in the training clinic at Middlesex University for over thirty years.

She qualified as a Naturopath in 1982 and then as a Medical Herbalist in 1990. In 1995, Hananja helped pioneer Britain's first BSc degree in Herbal Medicine in partnership with Middlesex University, where she practised at the University training clinic. She is a co-founder and Clinical Director at the Heartwood Professional course for Herbal Medicine.

Hananja's practice marries science with tradition, using the knowledge gained from new research to enhance the established traditions of herbal medicine, including the crucial importance of nutrition to health.

She has lectured at Middlesex University and widely throughout the UK for her specialist experience in gynaecology, paediatrics, pharmacology, herbal therapeutics and sees a large number of patients with gynaecological problems referred to her by GPs and hospital consultants.

Hananja has contributed to the BBC series and accompanying books Grow Your Own Drugs, and co-edited the book Herbal Exchanges in 2014, celebrating the 150^th anniversary of the National Institute of Medical Herbalists.