GERD (Gastroesophageal Reflux Disease, commonly known as "acid reflux") is hard to miss, or ignore - especially if you're one of the 15-20 million Americans who suffer from this chronic, potentially dangerous condition every day. But did you know that you can have GERD and not be aware of it? Nocturnal GERD occurs when you're asleep - you might have no symptoms at all during the day - and may be tied to other sleep disorders. Learn the warning signs on this eye-opening episode of "Healthy Body, Healthy Mind".