A low residue diet is also known as the low fibre diet. The low residue diet is usually meant for patients during the pre- and post- operation. What the low residue diet is supposed to do is to decrease bowel volume. Some might even use the term “low residue diet” and “low fibre diet” interchangeably, but in reality, these 2 terms are not exactly the same. This is because low fibre foods such as dairy actually stimulate bowel movement. Similarly, foods that have lower residue would be high in fibre.