NAICS Code 621399-25 - Nutritionists

Marketing Level - NAICS 8-Digit

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NAICS CODE 621399-25
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NAICS Code 621399-25 Description (8-Digit)

Nutritionists are professionals who specialize in the study of food and its effects on the body. They work with individuals to develop personalized nutrition plans that promote health and prevent disease. Nutritionists may work in a variety of settings, including hospitals, clinics, schools, and private practices. They may also work with food manufacturers to develop and promote healthy food products.

Parent Code - Official US Census

Official 6‑digit NAICS codes serve as the parent classification used for government registrations and documentation. The marketing-level 8‑digit codes act as child extensions of these official classifications, providing refined segmentation for more precise targeting and detailed niche insights. Related industries are listed under the parent code, offering a broader context of the industry environment. For further details on the official classification for this industry, please visit the U.S. Census Bureau NAICS Code 621399 page

Tools

Tools commonly used in the Nutritionists industry for day-to-day tasks and operations.

  • Calipers
  • Body composition analyzers
  • Food scales
  • Measuring cups and spoons
  • Nutrition analysis software
  • Blood glucose monitors
  • Blood pressure monitors
  • Food diaries
  • Portion control plates
  • Recipe analysis software

Industry Examples of Nutritionists

Common products and services typical of NAICS Code 621399-25, illustrating the main business activities and contributions to the market.

  • Weight management
  • Sports nutrition
  • Pediatric nutrition
  • Geriatric nutrition
  • Oncology nutrition
  • Renal nutrition
  • Diabetes nutrition
  • Cardiovascular nutrition
  • Vegetarian and vegan nutrition
  • Food allergy and intolerance management

History

A concise historical narrative of NAICS Code 621399-25 covering global milestones and recent developments within the United States.

  • The Nutritionists industry has a long history dating back to ancient times when Hippocrates, the father of modern medicine, said, "Let food be thy medicine and medicine be thy food." In the 18th century, Antoine Lavoisier discovered the role of metabolism in the human body, which led to the development of modern nutrition science. In the 20th century, the discovery of vitamins and minerals and their role in human health led to the emergence of the modern nutritionist profession. In the United States, the nutritionist industry has seen significant growth since the 1970s, with the establishment of the American Dietetic Association, now known as the Academy of Nutrition and Dietetics, and the passage of the National Nutrition Monitoring and Related Research Act in 1990, which established the Dietary Guidelines for Americans.