Some of the symptoms of B12 deficiency are: Weakness, tiredness, or lightheadedness
10.1016/j.nbd.2015.09.006 Neurobiol
Rotate sites systematically (abdomen avoiding 2inch radius around navel, outer thighs, upper arms) to avoid lipohypertrophy [8]
Growing evidence suggest that the elevation of GLP-1 is also critically involved in the effects of metformin, gut microbiota, and bariatric surgery on metabolic homeostasis 3,4,5,6
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