What is the most important factor that causes caregiver role strain?

What is the most important factor that causes caregiver role strain?

Discussion Question
Respond to one of the following questions:

Review Healthy People 2020 Global Health Initiatives. Choose one disease process and discuss the disease process, the goal of Healthy People 2020, and how the CDC plays a role in meeting the goal. 
Search the ……….. University Online Library for caregiver role strain. What is the most important factor that causes caregiver role strain? What can be done to prevent it?

Citations should conform to APA guidelines.