Still, on this specific endpoint, GHK-Cu outperformed retinoic acid in a direct comparison
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Neurological symptoms often develop gradually and may include: Paraesthesia : tingling or 'pins and needles' sensations, typically starting in the feet and hands Numbness : reduced sensation in the extremities, which may affect balance and coordination Burning pain : particularly in the feet, often worse at night Weakness : muscle weakness and difficulty walking Balance problems : unsteady gait and increased fall risk due to proprioceptive impairment Cognitive changes : memory problems, confusion, difficulty concentrating, and mood disturbances Haematological signs may accompany neurological symptoms and include fatigue, weakness, pallor, and shortness of breath due to megaloblastic anaemia

Where it's most often discussed: Tissue repair and recovery models (especially tendons/ligaments and muscle) Wound healing and regenerative signaling Gut integrity and inflammation-related pathways Where it's not firmly established: Extensive, rigorous human studies designed to measure fat loss outcomes (fat mass, waist circumference, body fat percentage) That distinction matters
This means that anxiety disorders will eventually begin to diminish