Which of the following aspects of the patient’s history would not be considered to have contributed to his stroke?

A 51-year-old has been admitted to a rehabilitation center after hospital treatment for an ischemic stroke. Which of the following aspects of the patient’s history would not be considered to have contributed to his stroke? (Points : 0.4)
He was diagnosed with type 2 diabetes eight years ago
Elevated cholesterol
Blood pressure that is normally 120/80
The patient is an African American Male
History of sickle cell anemia