Meet the wellness experts

Dr James Harmsworth King MBBS MPhil PhD

Chief Medical Officer

Meet Dr James Harmsworth King, Chief Medical Officer at Evergreen Life with over 10 years' clinical experience and experience in biotechnology.


Dr James Harmsworth King is an academic physician (Imperial College London) with over 10 years clinical experience, a MPhil in Bioscience Enterprise and a PhD in Cardiac Electrophysiology (University of Cambridge). His research into sudden cardiac death has received numerous awards and his publications have been cited over 250 times.

He consulted for several major pharmaceutical companies before co-founding AngioSplice, a biotechnology company that went on to win the Cambridge University Enterprise Competition for best university spin-out that year. He then co-founded Eos Analytics, a health data collection and analytics company in 2017 which was acquired by Evergreen in 2019.




JH King, CLH Huang, JA Fraser (2013). Determinants of myocardial conduction velocity: implications for arrhythmogenesis. Frontiers in physiology 4, 154

JH King, Y Zhang, M Lei, AA Grace, CLH Huang, JA Fraser (2013). (Atrial arrhythmia, triggering events and conduction abnormalities in isolated murine RyR2‐P2328S hearts. Acta physiologica 207 (2), 308-323

JH King, C Wickramarachchi, K Kua, Y Du, K Jeevaratnam, HR Matthews, et al.(2013). Loss of Nav1.5 expression and function in murine atria containing the RyR2-P2328S gain-of-function mutation. Cardiovascular research 99 (4), 751-759.

Y Zhang, J Wu, K Jeevaratnam, JH King, L Guzadhur, X Ren, AA Grace, et al. (2013) Conduction Slowing Contributes to Spontaneous Ventricular Arrhythmias in Intrinsically Active Murine RyR2‐P2328S Hearts. Journal of cardiovascular electrophysiology 24 (2), 210-218.

Y Zhang, JJ Wu, JH King, CLH Huang, JA Fraser. (2014) Measurement and interpretation of electrocardiographic QT intervals in murine hearts. American Journal of Physiology-Heart and Circulatory Physiology 306.

SC Salvage, JH King, KH Chandrasekharan, DIG Jafferji, L Guzadhur, et al. Flecainide exerts paradoxical effects on sodium currents and atrial arrhythmia in murine RyR2‐P2328S hearts. Acta Physiologica 214 (3), 361-375

Interests & Specialisms