As founding director of RCC, he was responsible for establishing one of the largest comprehensive cancer centres in India and for initiating programmes in Community
Oncology,
Pain and
Palliative Care, and
Paediatric Oncology for the first time in India. He was a member of the expert group that drew up the
National Cancer Control Plan of India. He served the
World Health Organization (WHO) for more than a decade in their Expert Advisory Panel on Cancer. He was the only member from India on the Advisory Committee of the Director General,
WHO and
Cancer Technical Group (CTG) of WHO. He introduced for the first time an institution oriented and extremely inexpensive
cancer insurance plan in India called
Cancer Care for Life. He established five district-level peripheral centres for prevention and early detection and a pain relief and palliative care network with
Morphine availability for
terminal cancer patients. He implemented a 10-Year Action Plan in
Kerala which reduced tobacco consumption, improved early detection, enhanced therapy facilities, and provided palliative care and pain relief to substantial sections of dying cancer patients. This programme finds mention in
IARC (
Managerial Guidelines for NCCP (2002),
World Cancer Report (2003)), and WHO documents. He has assisted the World Health Organization as Consultant in several major workshops and meetings such as design modification of
teletherapy machines 1992, preparation of managerial guidelines for cancer control 1994 and 2000, preparation of pain and palliative care guidelines 1994, the Cancer Technical Group meeting 2005, and the Cancer Advisory Group meeting 2005. He has served as the Director of the World Health Organization Collaborating Centre (No.130) since it was established until his retirement in November 2003. He has served as the Short-term Consultant in IARC three times and was a visiting scholar in
Allegheny General Hospital,
Stanford University, and
University of Southern California. Nationally, he has served as President, Association of Radiation Oncologists of India, Member of the Scientific Advisory Board of the Indian Council of Medical Research, and Member of the Board of Radiation and Isotope Technology of the Department of Atomic Energy of India. He has done an exhaustive study on human health effects of background
radiation in
coastal areas of Kerala. Nair has also published more than 300 papers in the field of medicine. == Illegal drug trials controversy ==