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Rather than manipulating hormones, suppressing appetite, or artificially stimulating the nervous system, it works at the level of basic cellular energy production and storage

Oral supplements face challenges in the digestive system, where absorption can be low, mainly in those with certain gut issues

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Stomach issues, such as gastritis, infection with Helicobacter pylori or bariatric surgery (reducing stomach size) can all significantly reduce B12 absorption (Sobczyska-Malefora et al., 2021)

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Here are a few key B12 injection benefits: More consistent energy throughout the day, reducing the afternoon slump Sharper focus and less brain fog, especially for people with demanding mental workloads Improved mood stability , often reported as fewer irritability swings or mild depression