Tier 2 — strong

An abnormal urinary excretion of glycine betaine may persist for years

Michael Lever, Wendy Atkinson, Peter M George, Stephen T Chambers
Clinical biochemistry 2007 40(11):798-801

Bibliography

PubMed
PMID 17490630
DOI
10.1016/j.clinbiochem.2007.03.009
Funding
Funding was not specified in the indexed record or accessible funding metadata.
Competing interests
A competing-interest declaration was not available in the indexed record or accessible disclosure metadata.

Study snapshot

DesignLongitudinal clinical biomarker study
ModelHuman participants
SamplePreviously high-excretion patients and 20 controls
InterventionMeasured betaine status and related metabolites; no randomized TMG treatment
Duration1998-2005 with repeat daily samples
EndpointsChronic betaine excretion

What the study showed, in plain terms

Published in 2007, this source examined human observational and biomarker research. Design: Longitudinal clinical biomarker study. Sample/model: Previously high-excretion patients and 20 controls. The exposure or intervention was Measured betaine status and related metabolites; no randomized TMG treatment. Follow-up or treatment period: 1998-2005 with repeat daily samples.

Abnormally high urinary betaine persisted for years in some patients.

Observational exposure analysis: residual confounding and reverse causation remain possible. Associations do not establish that betaine supplementation causes the same outcome.

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Key findings

  • Abnormally high urinary betaine persisted for years in some patients.
  • The recorded outcome domains were Chronic betaine excretion.
  • The result applies to the tested exposure: Measured betaine status and related metabolites; no randomized TMG treatment; 1998-2005 with repeat daily samples.

What this study can and cannot tell us

  • Observational exposure analysis: residual confounding and reverse causation remain possible. Associations do not establish that betaine supplementation causes the same outcome.
  • An individual controlled trial must be interpreted alongside its comparator, sample size, endpoint selection and independent replication. It does not validate a different commercial formulation or a general longevity claim.
  • Source basis: Indexed abstract and bibliographic data. Missing method details, funding information or participant denominators are not inferred.

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Association of choline and betaine with the risk of cardiovascular disease and all-cause mortality: Meta-analysis
Qinglin Yang et al. · European journal of clinical investigation · 2023
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Jiyoung Youn et al. · Clinical nutrition (Edinburgh, Scotland) · 2019

Editorial review

Reviewed by the Biohack Blueprint research team

Last verified

Dr. Khaled Mahmoud, MBBChCritical Care Medicine, Longevity Science & Editorial Direction Dr. Amr Yasser, PhDCardiometabolic, Musculoskeletal, Gut & Bioavailability Dr. Abdulla Mostafa, PhDCellular Senescence, Neurological, Mitochondrial & Brain-Ageing Biology