This absence of IGF-1 stimulation is critical for appetite neutrality because IGF-1 has known effects on hypothalamic neuropeptide expression, including alterations to neuropeptide Y (NPY) and agouti-related peptide (AgRP), both potent appetite stimulators
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Iron deficiency may also cause a metallic taste, especially in people with anaemia
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Vitamin B12 injections typically begin to work straight away
Keep vials protected from light in their original carton