The most relevant and up-to-date studies were selected to evaluate both risks and potential clinical applications of this diet in T1D in young adults, (3) Results and Conclusions: While nutritional ketosis under controlled conditions is typically safe, individuals with T1D, especially young adults, may be more vulnerable to DKA due to factors such as inconsistent insulin administration, lack of ketone monitoring, and lifestyle changes. This evidence concerns the gene INS and type 1 diabetes mellitus.