Many environmental factors including food ingredients (β-casein or bovine insulin from cow’s milk, gluten), exposure to infectious agents (enteroviruses), and intestinal microbiota dysbiosis (due to antibiotics, alcohol abuse, inadequate diet or chronic diseases) are believed to be the reason for the dramatic increase in T1D incidence in people under the age of 18, but also in older adults (4–6). This evidence concerns the gene INS and type 1 diabetes mellitus.