Can ChatGPT Really Be a Virtual Dietitian?

Artificial intelligence is making waves in healthcare - and nutrition is no exception.

Many of us have seen people online asking ChatGPT for meal plans, calorie counts, or even nutrition diagnoses. Some call it their “virtual dietitian.”

But where does that leave us, the actual dietitians?

A 2023 paper by Manuel B. Garcia, published in Applied System Innovation, explored exactly that question. The study examined whether ChatGPT could serve as a tool for improving nutrition knowledge - and if it could possibly replace us.

What ChatGPT Can (and Can’t) Do Compared to Nutrition Apps

ChatGPT can:

• Explain nutrition concepts conversationally
• Generate personalized meal plans based on goals, preferences, or restrictions
• Estimate energy and nutrient needs
• Provide learning support through Q&A, reminders, or healthy tips

But it can’t:

• Access a verified nutrition database
• Track actual intake or progress
• Send real-time notifications
• Perform physical assessments or demonstrations

In short: ChatGPT can enhance nutrition learning, but not nutrition care.

How It Fits Within the Nutrition Care Process (NCP)

ChatGPT can assist in theory at every stage:

• Assessment: It can estimate energy needs or explain dietary guidelines.
• Diagnosis: It can identify possible nutrition issues based on given data.
• Intervention: It can suggest general meal ideas or modification strategies.
• Monitoring & Evaluation: It can teach users how to set goals or interpret lab values.

However, it lacks the ability to validate, contextualize, or monitor outcomes.

For example, when I asked ChatGPT to create evidence-based nutrition recommendations for managing PCOS, it gave generic recommendations and lacks local context. When I asked it to cite its references, the links it provided were erroneous. To correct, I had to refine my prompts, provide data (research articles and credible sources that I researched myself) and continuously request for revisions until I get the result that I wanted. It does take time, but I guess starting from scratch and working without AI support would take me much longer.

In other words - it can simulate the process, but not execute it.

Can ChatGPT Replace RNDs?

I don't think so.

Nutrition work is human work. ChatGPT can’t assess a client’s emotional relationship with food, recognize non-verbal cues, or adapt to complex cases (like CKD with diabetes or PCOS with emotional eating).

It can’t coordinate care, provide empathy, or ensure accuracy and ethical accountability.

But it can complement our work - by helping us educate clients faster, simplify complex ideas, and bridge accessibility gaps in areas with limited nutrition professionals.

The real challenge isn’t AI replacing us - it’s us not learning how to use it.

Practical Ways for RNDs to Integrate ChatGPT in Practice

Here’s how you can leverage it responsibly:

• Client education: Use ChatGPT to simplify explanations of macros, micronutrients, or evidence-based nutrition recommendations.
• Content creation: Draft first versions of handouts, meal ideas, or lesson outlines (then refine for accuracy and contextualization).
• Professional development: Provide ChatGPT with a PDF copy of a research article and ask it to summarize, or compare nutrition frameworks.
• Coaching support: Generate reflection prompts or journaling exercises to encourage behavior change.

Always verify information, cite sources, avoid sharing personal details of our patients and keep your professional judgment front and center.

The Takeaway

ChatGPT is not an enemy.

It’s a tool - and tools are only as powerful as the hands that use them.

It can help us scale education, improve communication, and make nutrition knowledge more accessible to the public.

But the art of nutrition care - listening, empathizing, and guiding real behavior change - remains deeply human.

As RNDs, our value lies not just in knowledge, but in connection, critical thinking, and compassion.

Let’s learn to use AI to our and our patients' advantage - not fear it.

Til next time,

Grace Banal, RND, MSc

Reference:

Garcia, M.B. (2023). ChatGPT as a Virtual Dietitian: Exploring Its Potential as a Tool for Improving Nutrition Knowledge. Applied System Innovation, 6(5), 96. https://doi.org/10.3390/asi6050096