The invention of sharp-edged stone tools allowed early humans to butcher large animals, providing a calorie-dense food source that required less processing in the gastrointestinal tract, which allowed gut tissue to shrink and provided fuel for brain expansion.

Authors

• Person: Not available Organization: Scientific American
  To Follow the Real Early Human Diet, Eat Everything

Sources

• To Follow the Real Early Human Diet, Eat Everything www.scientificamerican.com Scientific American via serper

Referenced by nodes (1)

• stone tools concept