Truly amazing
Whilst injections bypass gut absorption, conditions like active Crohn's disease or coeliac disease may cause increased metabolic demands that could influence how quickly B12 is utilised
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Ir J Med Sci
A review in the Journal of Clinical Endocrinology confirming that GHRH analog therapy produces significant improvements in body composition, sleep quality, and exercise capacity in aging adults supports its use in clinical anti-aging protocols

[6] [7] Common neurological presentations include: Peripheral neuropathy tingling, numbness, or pins-and-needles sensations (paraesthesia), typically beginning in the feet and hands in a symmetrical 'glove and stocking' distribution Gait disturbances unsteadiness, difficulty walking, or loss of balance due to proprioceptive impairment Cognitive changes memory problems, confusion, difficulty concentrating, or 'brain fog' Mood alterations depression, irritability, or personality changes Weakness muscle weakness or fatigue affecting daily activities Visual disturbances rarely, optic neuropathy causing blurred or reduced vision In more severe cases, patients may develop subacute combined degeneration of the spinal cord , a serious condition affecting the posterior and lateral columns