Using a new data set constructed by converting NSS household consumption figures (rural sector) for the 43rd round (1987-88), 50th round (1993-94) and 55th round (1999-2000) into their nutritional equivalents, this paper presents new evidence of the extent of undernourishment in terms of calories and proteins. Results are presented for evidence of undernourishment in terms of calories for sedentary, moderate and heavy work, in terms of protein and jointly in terms of protein and calories. The results are presented at the national, state and NSS regional levels. Undernourishment declined between 1987-88 and 1993-94 almost everywhere and more spectacularly between 1993-94 and 1999-2000; however the 55th round data is not strictly comparable with the earlier rounds. We also analyse logit models of determinants of undernutrition.