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B12 injections are particularly beneficial for: Individuals with B12 Deficiency: Often caused by dietary restrictions (e.g., vegetarians and vegans), absorption issues, or digestive disorders

Gastroenterology 140 , 12081218.e2 (2011)

This is because it will still cause a peak and trough to be produced, but with a small variation between the peak and trough once stable levels are reached, much like whats seen in the natural diurnal rhythm of Testosterone among young men (Figure 19), and what has been demonstrated in the above graphs

Its great for those with severe deficiency or trouble absorbing

Both studied angiogenesis and wound healing models

Sleep efficiency is the proportion of time spent sleeping when the individual intends to sleep, and is expressed as a percentage