Whole foods also lack the list of potential
negative side effects that can come from protein shakes, including
gastrointestinal distress, nausea, bloating, headaches, nutrient deficiencies or
negative interactions with certain medications.
We actually expected we might see something like this, because giving resistant starch to people with some aspects of gut dysbiosis can often cause
negative effects (bloating or gas etc), but nobody reported any
gastrointestinal side - effects.