Jenna provides an overview of type 1 diabetes (T1D) and clarifies the difference between type 1 and type 2 diabetes. She explains that T1D is an autoimmune disease where the pancreas stops producing insulin, while type 2 diabetes can be managed with medication, exercise, and diet. Jenna also discusses the challenges of living with T1D, such as constantly monitoring blood sugar levels and the risk of low and high blood sugar episodes. She highlights the potential complications of T1D, including diabetic ketoacidosis (DKA), and shares her personal experience with the disease.