Dr Jim Milledge has been involved in High Altitude Medicine and Physiology since 1960 when he was a member of the ?Silver Hut? scientific and mountaineering expedition. With other scientists, he spent nine months in the Everest region carrying out research on the physiology of acclimatization, mainly in the Silver Hut at 5,800m. Since then he has been on numerous expeditions to many of the great ranges. These include science expeditions to Kongur (1981), Everest (1981) Mount Kenya (1987), Bolivia (1989), Kangchenjunga (1998), Chamlang (2003) as well as field studies in Wales, the Lake District and Switzerland (1977-84).

His career has been as a General and Respiratory Physician, first for ten years in South India at Vellore Christian Medical College & Hospital, including a year?s Fellowship in San Francisco with John Severinghaus and latterly at Northwick Park Hospital, Harrow where he worked as with John Nunn in the Division of Anaesthesia as well as in Chest Medicine.

He retired from the NHS in 1995 and now is able to devote most of his time to Altitude Medicine. His published work is mainly in this field and he has written (with Michael Ward and John West) the standard textbook on this subject.