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doi:10.1074/jbc.M202744200

Improved Mental Clarity Brain fog and poor focus are common signs of B12 deficiency
The publication of high-quality mechanistic studies, coupled with small human trials showing functional endocrine and immune effects , has elevated the peptide from fringe curiosity to a serious candidate in the longevity toolkit

Patients on testosterone therapy who are interested in trial participation should inform their prescribing clinician and search for eligible UK studies via the NIHR 'Be Part of Research' portal
