Methodology

Can I Trust AI for Nutrition Advice?

Francesco Zen, founder of ZTraining · Last updated 19 June 2026

Why context matters more than the source

Nutrition guidance genuinely varies across the world. Having worked across the US, Europe, and the Middle East, I've seen how different schools follow different guidelines, sometimes meaningfully different ones. That alone is a reason to stay grounded in your own numbers rather than treating any single piece of advice as universal truth.

Where the real safety check is

The safety of any nutrition guidance, AI included, comes down to two things: how you actually feel, and what your own biomarker analysis shows over time. Those are the checks that matter, regardless of where the advice came from.

Use discernment, always

I'd still recommend evaluating and forming your own view, no matter whether the advice comes from AI, a doctor, or an enthusiast with strong opinions. That's exactly why it's called advice, not instruction.

He built Mr Z, an AI coach trained on his methodology to bring the same approach to a wider audience.