The leading cause of nutrition-related death in the united states is

I believe the answer is diabetes

Unhealthy eating and physical inactivity are leading causes of death in the U.S. Unhealthy diet contributes to approximately 678,000 deaths each year in the U.S., due to nutrition- and obesity-related diseases, such as heart disease, cancer, and type 2 diabetes

Hope I helped!

well

explanation:

"a.) well–developed vascular system."