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Rapamycin extends mouse lifespan 9–14%
NAD+ precursors reverse aging in humans
Blue-light glasses improve sleep quality
Walking 10 min after meals blunts glucose
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The various types of scientific studies and how they differ — Whalespan

Content›Video›The various types of scienti…

The various types of scientific studies and how they differ

Peter Attia13m · 2023-09-06

Claims Made

16

Claims Supported

2

Support Rate

13%

Support rate

2 of 16 claims supported

2 supported14 partial / not

Claims from this content

8

✓Well SupportedRandomized controlled trials (RCTs) are the gold standard for research, aiming to eliminate bias by randomly assigning participants to treatment groups.◐Partially SupportedNon-randomized trials can introduce bias because treatments are assigned to groups without randomization.◐Partially SupportedComparing groups where individuals self-select into treatments without randomization introduces bias.✕Not SupportedA meta-analysis is not necessarily superior to a randomized controlled trial.Partially Supported

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AV

A. Volkovreader

4h

Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.

NP

N. Park

2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

◐

Retrospective observational studies examine past behaviors and outcomes to identify patterns, but cannot establish causality.

◐Partially SupportedCase series aggregate multiple individual cases to identify patterns in rare findings, such as spontaneous cancer regressions.

✕Not SupportedThe quality of a meta-analysis is dependent on the quality of the included studies.

◐Partially SupportedProspective cohort studies follow individuals forward in time to observe behaviors and health outcomes, without intervention.