Rachel Davies is a registered Clinical Research Associate and Respiratory Physiologist who has conducted lung function studies comparing smokers, vapers, and non-smokers at university hospital research units. She holds a BSc in Respiratory Physiology from Cardiff University and a postgraduate certificate in Clinical Research from University College London. With 10 years of clinical experience, she currently leads respiratory assessment protocols for smoking cessation trials.
Rachel Davies completed her degree in Respiratory Physiology at Cardiff University, followed by clinical training rotations across NHS Wales hospitals where she mastered spirometry, peak flow measurement, and cardiopulmonary exercise testing. She subsequently obtained a Postgraduate Certificate in Clinical Research from University College London, enabling her to design and conduct studies examining how different nicotine delivery methods affect lung function over time. Rachel has spent the past decade working in university hospital research units, contributing to landmark studies that track respiratory recovery in smokers who switch to vaping compared to those who quit nicotine entirely. Her hands-on clinical experience includes performing thousands of lung function tests and directly observing the measurable improvements that occur when patients eliminate tobacco combustion from their lives. She is skilled at interpreting complex physiological data and translating it into meaningful information that helps individuals understand what is happening inside their lungs during the transition from smoking to vaping. Rachel regularly presents findings at respiratory medicine conferences and contributes to peer-reviewed publications on tobacco harm reduction. Her writing focuses on the physiological realities of switching, addressing common concerns about lung health while providing evidence-based reassurance. She is committed to helping readers understand both the proven benefits and the honest limitations of current scientific knowledge about long-term vaping effects.