Related Clues:

• Stone-age diet
• Prefix meaning "primitive"
• "Caveman diet"
• 'Ancient' diet
• Regimen with so-called 'fat bombs'
• Prefix with -lithic or -zoic
• Prefix meaning 'ancient'
• Kind of diet that eschews processed foods
• "Ancient" diet
• Low-carb food regimen
• Like a very low-carb diet
• High-fat diet, casually
• Atkins variant
• Modern "ancient" diet
• Primitive-based kind of diet