As a registered dietitian, I have spent my career correcting nutrition myths.

Long before artificial intelligence entered the conversation, patients were already arriving with confident claims from magazines, social media, influencers, supplement companies, and diet culture. They were not unintelligent. They were trying to make sense of an overwhelming amount of information while living in a world that sells simple answers to complex bodies.

AI has changed the delivery system, but not the underlying problem.

People still need a way to tell the difference between information that sounds scientific and information that is actually accurate.

A real example: protein as “fuel”

Recently I asked an AI tool a simple question: which body cells use protein for energy?

The answer sounded polished. It said that almost all body cells can use protein for energy when necessary. But the answer skipped a critical piece of metabolism.

Amino acids contain nitrogen. Before the carbon skeleton of an amino acid can be used in energy pathways, that nitrogen has to be removed. This process produces ammonia, which is toxic. The body handles that nitrogen primarily through the liver, where ammonia is converted into urea so it can be excreted by the kidneys.

Most body cells are not independently “burning protein” for energy in the way the original answer implied.

The danger of “almost right”

The most dangerous misinformation is often not the information that is obviously ridiculous. It is the information that is almost right.

It uses real words. It borrows from real pathways. It may even link to reputable sources. But it leaves out the step that changes the meaning.

In healthcare, missing the important step matters.

Why nutrition is especially vulnerable

Nutrition is already a misinformation-heavy field.

Diet culture rewards certainty. Marketing rewards simplicity. Social media rewards confidence. The human body, however, is not simple.

Hormones interact. Organs specialize. Cells communicate. Stress affects appetite. Sleep affects blood sugar. Digestion affects mood. Beliefs about food affect behavior.

When complicated physiology gets compressed into a short answer, meaning gets lost.

How to use AI more carefully

AI can help organize questions, summarize information, and generate ideas. But it should not replace professional evaluation.

When AI gives you a nutrition or medical answer, ask better follow-up questions:

• Under what conditions is this true?
• Which cells or organs are involved?
• What step is being skipped?
• Is this true for most people, or only in specific situations?
• What would a clinician need to know before applying this to me?

The first answer is often not the safest answer.

The point of this work

This space exists to help people understand how their bodies actually work. We will talk about nutrition, metabolism, hormones, AI, and medical misinformation. Most importantly, we will practice critical thinking.