A sports nutritionist is a certified nutrition professional who works with athletes of any level—recreational, competitive, or professional. They advise athletes on eating habits that support optimal health and athletic performance. Sports nutritionists assist individual athletes in private practice, but many join sports nutrition programs at public universities and colleges, or work directly with sports teams.
Sports nutritionists do much more than advise on pre- and post-match nutrition. Their responsibilities include:
Sports nutritionists and sports dietitians share some core similarities, but there are notable differences. A sports nutritionist should have an undergraduate degree in nutrition, dietetics, or a related field and specialized training in sports nutrition. There is no universally required education, training, or accreditation to use the term nutritionist.
A registered dietitian (RD or RDN) is a board-certified expert who has completed formal education, 1,200+ hours of supervised training in various settings, passed a national exam, and continues to complete numerous hours of continuing education each year to maintain their credential. A dietitian can do everything a nutritionist does, but must also be licensed or certified by the state. A board-certified specialist in sports dietetics passes relevant exams from the Commission on Dietetic Registration.
While most sports nutrition professionals do not have the authority to diagnose health conditions, sports dietitians can help treat medical conditions through specialized dietary recommendations and can order lab tests for clients as needed. All of the nutritionists at Top Nutrition Coaching are registered dietitians, so you can trust them to be the most qualified experts to meet your needs.

You won't obtain enhanced fitness levels by starving your body of the calories it requires for energy and muscle mass maintenance. If a nutritionist recommends severe caloric restriction, look for someone else.
If the dietitian categorizes any food as inherently "bad" and requires you to avoid it entirely, consider that a warning sign. Carbohydrates and fats are examples of food groups some nutritionists may tell you to eliminate entirely — but this approach is rarely sound.
Your diet needs to account for your tastes and lifestyle. For healthy eating to be sustainable, you need the flexibility to eat foods you like and make incremental — rather than drastic — changes toward healthy eating habits.
No sports dietitian should require you to purchase proprietary supplements or meals. This could be a conflict of interest and potentially dangerous for your health.
Steer clear of sports nutritionists who require you to follow fads such as the keto, paleo, or Atkins diets. Real change requires a long-term commitment to a healthy diet consisting of whole, unprocessed food.