Dietician is in Nutrition and Dietetics Department, DN in Diabetes and Endocrinology (probably, names might be different in different areas)
I was referred to the hospital dietician in 1989. At that time I found her advice very basic and obvious, although her table loaded with healthy foods, bread, baked beans, cereal probably wasn't best advice for me personally. However, her explanation of why I gained 3 stones in 3 months of eating WW Ready Meals was a surprise. Too much salt! I thought salt would only be responsible for fluid retention, not by what she was telling me. I have subsequently noticed changes in weight when taking soluble co-codomol (lots of salt) and the effect on intestinal transit times, even if regular.