Paleo
Ancestral-pattern framing with mixed evidence; strong on processed-food removal.
Evidence base
Short-term metabolic improvements documented in small RCTs. Long-term outcome data limited. Benefits may derive largely from processed food elimination rather than specific macronutrient ratios.
Mechanisms
- Elimination of ultra-processed foods
- Higher protein and fiber from whole foods
- Reduced refined carbohydrate load
Studied populations
- Small RCT populations (weeks to months)
- Self-selected adherents in observational studies
Likely strengths
- Effective processed food elimination framework
- Emphasis on whole food sources
- May improve metabolic markers short-term
Open questions
- Long-term adherence and outcomes
- Legume and grain exclusion necessity
- Sustainability across cultures and budgets