02/13/2012 03:46 pm ET

The M.D.: What Science Says About Working Moms, And What The Heart Says

If you ask my 10-year-old son, he'd tell you that I'm not a "real doctor." His point of reference is my husband, David, a surgeon who usually leaves the house before 6 and works 12-hour days.

Most mornings, while David is at the hospital preparing for the operating room, I'm home making breakfast for our kids or packing lunches for school. In the late afternoons, while David is wrapping up office hours, I'm busy driving my son to soccer practice or overseeing his homework.