Mark Sisson discusses the symptoms, causes, and remedies for GERD.The symptoms can be abject misery: searing abdominal pain, debilitating stomach cramps, an excruciating, rising burn, acid-filled hiccups, tightened throat, constant sleep disturbance, and even the rare but terrifying bouts of choking from nighttime acid inhalation. I’m talking of course about acid reflux or GERD as it’s commonly called these days. I personally suffered from occasional bouts of GERD and experienced all the symptoms above for years during and even after my endurance days. (It wasn’t until I gave up grains that my GERD completely disappeared.) Maybe you’ve had it. Maybe you know someone who’s had it. GERD, by the way, isn’t your run-of-the-mill occasional heartburn (which isn’t much fun either) but a...