Walter is a $48-$year$-$old man who works as a pilot for Air Canada. He is required to have his doctor submit a report of the results of a full physical examination every year as a condition of his employment. At the most recent visit, his blood pressure was $\frac{137}{89},$ and his BMI was $27.$ His lab tests showed the following:

LDL cholesterol: $3\mathrm{.}0$mmo$\frac{l}{L}$

HDL cholesterol: $1\mathrm{.}8$mmo$\frac{l}{L}$

His family medical history revealed that his father died of a stroke at age $74$; his $79-$year$-$old mother is alive and well. He participates in regular physical activity, doing a cardio and resistance exercise routine at the gym $3$ times per week, and playing pick$-$up basketball every Sunday when he is home. If he is away working, he runs $3$ times a week $($at least $5km).$ He does consume a lot of restaurant food because of his travel schedule.