No. No, not gerd per se. Gerd can lead to barretts esophagus which can lead to esophageal cancer and ultimately death. Esophageal cancer is becoming more common and has a high mortality but is still relatively uncommon.
Yes but rare. As dr. Vinson noted, major concerns are longterm complications. However, depending the amount/degree of refluxing, there are certain subgroups that can have complications more directly associated with gerd. Some infants have respiratory complications and/or sid thought to be associated with gerd. Some adults may have significant lung disease and/or infection associated with refluxing.