‘Eat food. Not too much. Mostly plants.’

Daniel Lieberman's work, as reported by Harvard Graduate School of Education, explores the evolutionary basis of human dietary habits, specifically contrasting highly restrictive diets like keto or veganism with a more inclusive approach. The analysis suggests that humans evolved to consume a diverse range of foods, providing insights into potential long-term health and sustainability considerations.

Why it matters

This analysis is strategically important as it provides a foundational understanding of human dietary evolution, which can inform long-term public health strategies, food system development, and health policy. Adopting principles grounded in evolutionary biology could lead to more sustainable and effective approaches to nutrition and well-being.

Key insights

• Humans evolved to consume a wide variety of foods.
• Restrictive dietary approaches (e.g., keto, veganism) may not align with evolutionary eating patterns.
• Understanding evolutionary eating can inform contemporary dietary recommendations.
• The core tenet 'Eat food. Not too much. Mostly plants.' summarizes a balanced approach.

Source

Harvard Graduate School of Education — https://news.harvard.edu/gazette/story/2026/08/eat-food-not-too-much-mostly-plants/