The initials RD after someone’s name means registered dietitian. This is a person who is an authority on the role of food and nutrition in health. He or she can be relied on for nutrition information and advice. To earn this credential, the person must have received degree(s) from a college or university approved by The American Dietetic Association and passed an extensive examination.

Are not all angels ministering spirits sent to serve those who will inherit salvation?
Hebrews 1:14