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Synthesizes Vitamin D3 from sun exposure to UVB rays
Additionally, chronic conditions such as HIV and tuberculosis have been implicated in B12 deficiency due to increased metabolic demand and altered absorption mechanisms ( The diagnosis of vitamin B12 deficiency typically relies on low total B12 levels and elevated concentrations of homocysteine (Hcy), as well as levels of transcobalamin-bound B12 (holoTC) and methylmalonic acid (MMA), which serve as functional indicators of cobalamin insufficiency ( Vitamin B12 requirements fluctuate throughout the life course, influenced by metabolic demand and physiological changes
Starting with a low dose and increasing slowly helps reduce these problems
Rev Endocr Metab Disord 15(3):181187 van Bloemendaal L et al (2014) GLP-1 receptor activation modulates appetite- and reward-related brain areas in humans
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