The author wrote "People who get heart disease are more likely to have high LDL cholesterol". Had she written "People who have high LDL cholesterol are more likely to get heart disease" then the argument would have been valid.
The author wrote "People who get heart disease are more likely to have high LDL cholesterol". Had she written "People who have high LDL cholesterol are more likely to get heart disease" then the argument would have been valid.