An arrhythmia is a problem with the speed or rhythm of the heartbeat. Atrial fibrillation (AF) is the most common type of arrhythmia. The cause is a disorder in the heart's electrical system....Page last updated on 03 February 2012 Topic last reviewed 18 January 2012AF can lead to an increased risk of stroke. In many patients, it can also cause chest pain, heart attack, or heart failure.
N.B. Watch your units! Some studies reported 25-hydroxyvitamin D concentrations in nanomoles per liter, while others reported results in nanograms per milliliter.
P.S. I just saw this story in the hard copy version of the January 2012 issue of Family Practice News.
I thake 5 K per day, I wonder what my level is?