Under Delaware law, you cannot practice dietetic and nutrition therapy without a license. This includes assessing individual’s specific nutritional needs and the development of an intervention plan. No one can practice dietetic and nutrition therapy or use the term “nutritionist” or “dietitian” unless such a person is licensed.
However, you may provide nutrition and dietetic therapy without a license if you are employed by the United States federal or state government.
You may also provide a general program for weight control without a license if it is approved by a registered dietician or a licensed physician.
Herbalists who do not consider themselves “dietitians” or “nutritionists” are allowed to make nutritional recommendations regarding herbs, vitamins, minerals, foods, etc. Herbalists can market, distribute, sell, or recommend, advise, or provide non-fraudulent information about nutrition.
Religious practitioners are able to provide nutritional care according to religious tenets, as long as the practitioner does not label himself as a “dietitian” or any other misleading title.
Anyone, who does not hold himself or herself out to be a dietitian or nutritionist by using 1 or more of the titles restricted by the law, may provide recommendations regarding lifestyle, or who ….recommends, advises, or furnishes non-fraudulent information about, herbs, vitamins, minerals, amino acids, carbohydrates, sugars, enzymes, food concentrates, foods, other food supplements, or dietary supplements.
The law also provides in § 3810(4) that legitimate disagreement about the role of the above-listed nutrients and foods as they apply to human nutrition shall not, in and of itself, constitute fraud.
Under this law you cannot advertise or be perceived as “assessing nutritional needs of individuals and groups” etc. You also cannot do or say anything that would give the impression that you are licensed, registered, or call yourself a nutritionist or dietitian.
Source: Section 3801 of the Delaware Code