Final answer:
An LDL level of 99 does not ensure safety from an MI caused by bad arteries. LDL can contribute to the buildup of plaque in arteries, which increases the risk of heart disease.
Step-by-step explanation:
An LDL level of 99 does not mean that you are totally safe from a myocardial infarction (MI) caused by bad arteries. LDL, also known as 'bad' cholesterol, can contribute to the buildup of plaque in your arteries. This plaque can eventually lead to a blockage in the artery, which can result in an MI or stroke. Therefore, it is important to maintain a healthy LDL level and overall cholesterol profile to reduce the risk of heart disease.