Ingestion of bifidobacteria can improve gastrointestinal transit. In elderly individuals, mild constipation can be at least partially corrected through the consumption of milk fermented by bifidobacteria (Seki M et al. Nutr Food 1978;4:379-387). In addition, colonic transit times of women were significantly accelerated in the sigmoid colon following consumption of a milk fermented by bifidobacteria sp. and yoghurt cultures (Grimaud JC et al. Gastroenterol Clin Biol 1993;17:A127), but not by traditional yoghurt cultures alone (Grimaud JC et al. Les bact_ries lactiques, 1994;406).