What's really in your food? Dan Kittredge on nutrient density

Optimum Nutrition

Optimum Nutrition
What's really in your food? Dan Kittredge on nutrient density
Oct 16, 2025 Season 4 Episode 2

In this episode, Dan Kittredge – founder of the Bionutrient Food Association and the Bionutrient Institute – takes us on a journey from his roots on an organic farm to leading a global movement for better food. 

He breaks down the concept of nutrient density, why soil health matters more than ever, and how citizen science is empowering everyday consumers to demand higher-quality food. 

Dan shares simple, actionable steps farmers can take to improve crop nutrition and outlines a bold vision for shifting agriculture’s focus from yield to quality. If you’ve ever wondered what’s really in your food and how it impacts your health, this episode is your wake-up call.

Chapters 

00:00 The Journey of Dan Kittredge

05:34 Understanding Nutrient Density

15:49 The Science of Soil Health and Food Quality

22:29 Empowering Consumers through Citizen Science

23:43 The Nutritional Decline Across Generations

25:32 Transforming Soil Health: A Simple Approach

30:42 Shifting Focus: From Yield to Quality in Agriculture

32:10 The Role of Citizen Science in Agriculture

33:50 Defining Nutrient Density: A New Framework

35:07 The Future of Food: Enhancing Nutrient Density

39:19 Global Outreach: Building a Movement for Change


🔗 LINKS + MENTIONS: 

The Bionutrient Institute is a project of the Bionutrient Food Association.

The Bionutrient Meter is a handheld spectrometer that works through the principle of spectroscopy. The Bionutrient Meter has lights (LEDs - light emitting diodes) that emit light at very specific wavelengths, which then bounce off objects like carrots, or carrot pulp, or spinach, or soil. Some of it is absorbed by the object and turned into other forms of energy, like heat. A light sensor in the device reads how much light bounces back for each wavelength very quickly and multiple times throughout a given measurement.


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