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Tracy Miller is a freelance writer covering science, health, technology, and society
Presented for research literature review only Parl FF (2005)
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Both undernutrition and obesity can disrupt this axis
Vitamin B12, also known as cobalamin, is a water-soluble vitamin critical to metabolism, nervous system health, and red blood cell formation
Participation in a registered clinical trial remains the only legitimate route to access these treatments in the UK at present
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