New research reveals what coffee really does to your gut—and it’s surprising

Is coffee actually good for you? Some experts tout its health benefits, such as lowering the risk of type 2 diabetes and Alzheimer’s disease. At the same time, excessive caffeine consumption has been linked to various health conditions, such as anxiety, headaches, faster heart rate, and in some cases, lower bone density in women. Although coffee is widely believed to improve digestion and mood, what is less clear is the mechanism for how this works in the body—namely, its effect on...