Final answer:
About 9% of the U.S. population suffers from diabetes mellitus, predominantly Type 2 diabetes, which is characterized by insulin resistance. Lifestyle factors majorly influence its onset, and it can often be managed or reversed with healthy habits. Type 1 diabetes is less common and is an autoimmune disorder requiring external insulin administration.
Step-by-step explanation:
The disease that affects approximately 9% of the U.S. population and is characterized by the body's inability to produce sufficient insulin is known as diabetes mellitus. Specifically, in Type 2 diabetes, the most common form, affecting about 90% of those with diabetes, the body's cells become resistant to the effects of insulin. Poor diet, inactivity, and being overweight are significant risk factors. Although genetics play a role in the development of diabetes, lifestyle changes such as increased physical activity and a healthy diet can help manage or even reverse Type 2 diabetes in some cases. Without proper management, diabetes can lead to high levels of blood glucose, causing damage to various body systems.
Type 1 diabetes makes up a lesser percentage of cases and is an autoimmune disease where the body's immune system attacks the insulin-producing beta cells in the pancreas. People with Type 1 diabetes must have insulin administered externally since their bodies cannot produce it.