In recent years the frequency of fungal infections in human populations has increased considerably. The most common type offungus attacking the human organism is Candida albicans. Yeast-like fungi occur naturally in the oral cavity, intestines, vagina, or skin, however in amounts not dangerous to human health. The studies so far have shown that patients with diabetes type 1 (T1DM) to a large degree are exposed to complications related to fungal infections. A substantial growth of fungi observed in diabetic patients may unfavorably affect metabolic compensation, and lead to increased demand for insulin, as well as to the difficult to cure symptom infections. The weaker the immune resistance in patients with diabetes, the greater the risk of ailments related to candidiasis. The article contains a review of recent literature regarding the problems related to occurrence of yeast-like fungi in digestive tract of children with diabetes type 1.