It is 7 a.m. when Shilo Cook clocks in at St. John’s Regional Medical Center, the start of a 12-hour nursing shift that begins ordinarily enough on this Sunday morning — taking vitals, drawing blood, tending to a patient with stroke-like symptoms who needs an EKG.

You managed to glide through your twenties and thirties without any major health issues. Yet, as the calendar pages turn, you're finding that a host of minor -- and perhaps a few major -- medical problems keep cropping up. The doctor shakes her head when she sees your blood pressure and cholesterol numbers.

You managed to glide through your twenties and thirties without any major health issues. Yet, as the calendar pages turn, you're finding that a host of minor -- and perhaps a few major -- medical problems keep cropping up. The doctor shakes her head when she sees your blood pressure and cholesterol numbers.