(The Best Years in Life) Candida albicans is a form of yeast that lives in the colon. While Candida is not normal, it is common. Some studies say that Candida is present in 90% of the population. Some believe this number to be 100%. And for most people, Candida is not a problem. However, after treatment with antibiotics or as a by-product of digestion, Candida can multiply, disrupt normal digestive flora and cause severe mental and physical health problems. Read More.