Consumption of resistant potato starch results in changes to the gut microbiome in elderly adults, resulting in a healthier gut microbiome profile. Furthermore, consumption of resistant potato starch stimulates an increase in Bifidobacterium abundance in all individuals and also reduces levels of E. coli and Shigella. Furthermore, consumption of MSPrebiotic® increased the relative ratio of butyrate in the elderly and significantly reduced the use of stool softeners in the elderly.