Although MCT oil is often marketed and manufactured as a wellness product, MCTs are traditionally used in a clinical setting for a variety of reasons, Sollid says. For example, MCTs can be used as part of treatment for gastrointestinal disorders that affect the body's ability to absorb dietary fat (such as celiac disease or even diarrhea), he says. However, given that MCTs are more easily digested than other types of fat that we eat, "consuming too much of it at one time has the potential to cause discomfort, cramping, gas , bloating, and yes, even diarrhea ," he says. So, you have to be careful not to overdo it — especially if you're putting it in coffee, which is also known to increase people's urge to go, he says.