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The mechanisms do not appear to contradict each other, and some researchers have speculated that combining them could address both appetite and direct fat cell metabolism
doi: 10.1097/GOX.0000000000002843
Another study conducted by the University of California found that B12 supplements improved energy levels and reduced fatigue in individuals with chronic fatigue syndrome
Sold strictly for laboratory research
On the other hand, it would seem that a lack of vitamin B12 can cause people to lose their appetite, resulting in a decrease in weight rather than an increase in weight
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