# Healthy aging after 70 — source note
Reviewed 2026-09-20. User source: https://youtu.be/AQIGnkGFGA8?si=Q5Sa6MA3EpVIwQ3N
Video: AGING Speeds Up After 70 — But you Can Actually Reverse it (Here's What Science Says)
Channel attribution: Dr. Aven Royce; uploaded 20260919; duration 1191 seconds. Channel credentials not independently verified.

Video metadata and 487 caption segments retrieved. Captions retained privately and used to locate claims at approximately 1:07 (Dunedin), 4:56 (protein), 7:51 (senolytics), and 14:56 (Levy).

Two original study files downloaded and parsed; see study-downloads.json for URLs, page counts and checksums. The APA endpoint returned a small HTML security stub to direct HTTP requests, but the normal browser retrieved a genuine 10-page PDF. Duke's public repository API yielded the Belsky PDF with supporting material. These are original papers, not generated summaries. Public article links to source-hosted downloads rather than mirroring copyright-controlled files. Downloaded originals delivered separately to the requesting user.

Levy et al. (2002): DOI 10.1037/0022-3514.83.2.261; PMID 12150226; 660 adults 50+, observational survival analysis. Abstract says 7.5 years; Results says medians 22.6 and 15 years, difference 7.6. Do not describe this as an individual benefit proven by intervention. Comparisons to exercise, blood pressure and cholesterol are cross-study discussion, not randomized head-to-head results in the same sample.

Belsky et al. (2015): DOI 10.1073/pnas.1506264112; 954 young adults; ages 26/32/38 repeated physiological biomarkers. Age-38 estimates 28–61. Measurement/proof-of-concept, not treatment efficacy after 70; not simply a DNA-methylation test.

The article distinguishes measured associations, mechanistic speculation and clinical outcomes. It does not endorse DIY senolytics, supplements, restrictive eating or cold exposure. Full third-party captions and extracted paper text are not republished.