 He was also involved with "Education Protection Forum", a movement against student politics in the educational institutions in Kerala.Guptan Nair was married to Bhagirathi Amma and the couple had three children, B. Lakshmi Kumari, M G Sasibhooshan, a historian and writer, and B. Sudha Kumari.Nair died in a private hospital in Thiruvananthapuram on February 6, 2006, succumbing to respiratory illnesses, at the age of 86.