Vitamin D Only Seems to Slow Aging Markers If You Were Low to Begin With
This review suggests a blood test for vitamin D levels is more useful than guessing at a dose.
Vitamin D talks directly to your genes, switching them on and off in ways that overlap with how aging works. But this review of the evidence found that big trials of vitamin D pills alone show little benefit for healthy aging. The clearest effects showed up in people who were actually deficient, and when supplements were paired with exercise and better nutrition. The authors also point to a J-shaped curve, meaning too much can be as unhelpful as too little.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.
Related Studies
All researchAfter 70, Staying Fit for Just One More Year Cut Heart Risk by 40%
Norwegian adults aged 70 to 77 had their actual oxygen uptake measured, not just guessed from a questionnaire.
Genetics Hint Vitamin D Helps Muscle Mass, But Not Grip Strength
Researchers used gene variants tied to lifelong vitamin D levels to test cause and effect, which sidesteps the usual confounders.
How Fast You Stand Up May Predict Your Lifespan Better Than Your Illnesses
Doctors usually judge older patients by their list of diagnoses.