David John Mackay Smith

David John Mackay Smith is an Australian physician and skin-cancer clinician associated with SunDoctors Skin Cancer Clinics in Noosaville and the University of Queensland. After a long career in general practice, he completed a Master of Medicine in Skin Cancer at the University of Queensland. His clinical interests include melanoma prevention, early diagnosis, skin-cancer management, and the biological effects of solar exposure. His research examines melanocortin signaling, pigmentation, circadian rhythms, photoreception, and the influence of ultraviolet and visible light on human skin. Smith's publications connect clinical dermatology with evolutionary biology and photobiology, exploring how environmental light affects skin protection, cellular signaling, cancer risk, and modern patterns of health.