This law protects certain titles and provides for a license for dietitians, but does not otherwise limit the practice of nutrition.
In 2019, Oklahoma’s dietetics practice law was updated to make it considerably better for holistic practitioners. While practitioners may not diagnose, treat, or cure a disease or medical condition, they may practice up to the level of their education and training. This includes lab testing and dietary supplements.
The occupational title of nutritionist is allowed for unlicensed practitioners, but only a Licensed Dietitian may used such title, or the abbreviations LD, or PLD.
Source: §59-1741 of the Oklahoma Statutes