People who reduced their calorie intake by about 20% over two years showed a stronger slowing of biological aging (as measured by DunedinPACE) than those who reduced by only 12%, suggesting a dose-response relationship.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Whether a consistent dose-response relationship exists between caloric restriction magnitude and DunedinPACE slowing across diverse human populations and interventions.
A systematic review and meta-analysis of all RCTs (minimum 12) that report DunedinPACE changes across multiple levels of caloric restriction (e.g., 5%, 10%, 15%, 20%, 25%), with standardized outcome reporting and adjustment for baseline BMI and age.
Whether incremental increases in caloric restriction (e.g., 10% vs. 20% vs. 30%) produce graded reductions in DunedinPACE over 24 months.
A four-arm RCT of 600 healthy adults aged 30–50 randomized to 10%, 20%, 30% caloric restriction, or control, with DunedinPACE measured at baseline, 12, and 24 months, and energy intake verified by doubly labeled water.
Whether individuals who naturally maintain lower caloric intake over decades show progressively slower DunedinPACE trajectories.
A prospective cohort study of 4,000 adults with annual dietary intake records and DunedinPACE measurements over 20 years, stratifying by average caloric intake quintiles to assess dose-response in real-world settings.
Whether individuals with the slowest DunedinPACE trajectories have historically consumed significantly lower calories than those with fastest trajectories.
A case-control study comparing 300 individuals with the slowest DunedinPACE (bottom 10%) to 300 with the fastest (top 10%), using archived dietary records from the prior 10–15 years to estimate average caloric intake.
Whether current caloric intake correlates with DunedinPACE levels in middle-aged adults.
A cross-sectional analysis of 3,000 adults aged 35–55 measuring DunedinPACE and 7-day dietary intake via food diaries and doubly labeled water to assess correlation between current energy intake and DunedinPACE.