No, offering nutritional advice is not out a nurses scope of practice. It is our responsibility as long as we are not prescribing a dietary regimen. If we tried to prescribe then we would be practicing medicine without a license.
It is disturbing to me how much nurses are giving their practices away because they do not understand their scope of practice. This happens regularly because we avoid the work it takes to know the laws in the states where we practice and by not knowing our scopes of practice.
Unfortunately, in my humble opinion, we don't have enough time in school learning about what our scope actually covers. Its left up to us to learn the intricacies of our legal practice. How many of us come out of nursing school believing that nurses are a medical profession? That thought process is frightening. What makes nursing different?
The specialty practice is in large part what covers people when they are educating patients. It is up to nurses to define their practice, not the physicians and not the CEO, CFO etc. They don't know. They know their job, not ours.