Carbohydrates are present in whole grains and potatoes, as well as, other sources. Apart from providing a quick source of energy (remember the rejuvenating effect of glucose 'based drinks or eating a fruit'), these molecules assume several roles in organisms. The roles include structural strength (cellulose and pectin), signaling, host-pathogen interactions (glycoproteins), and even as treatment approaches. As far as their intake is concerned, researchers suggest that more than the quantity or the percentage of carbohydrates consumed, the quality is important. Amongst the various carbohydrate sources, the consumption of whole grains is recommended along with legumes that contain other nutrients like proteins. We believe that the readers find this book informative as information on all aspects of carbohydrates has been compiled in this single book.