I’m not positive, but, drinking coffee without milk and/or sugar tends to be more acidic on the stomach. With the addition of milk/sugar, those may protect the stomach from the acidity of coffee. Life Extension sells an easy on the stomach coffee. The method of the coffee being easy on the stomach is by adding the natural antioxidants found in coffee back to the coffee beans after they have been roasted. The coffee beans are soaked in water, how long I don’t know; then the beans are separated from the water. The water is saved. After the coffee beans are roasted they are added back to the water where they cool down and reabsorb the antioxidants that were extracted initially when the beans were soaked.
Author
Mark