Its potential to boost energy, improve physical endurance, and supports metabolic balance makes it a popular choice for wellness and longevity
The scientific evidence on their effectiveness is still evolving, and they are not a substitute for long-term healthy habits
Once you ingest vitamin B12, it is processed by acids and enzymes in the stomach and small intestine
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For patients seeking weight loss who request B12 injections, GPs should: Assess for genuine deficiency through appropriate blood tests rather than empirical treatment Provide education about the lack of evidence supporting B12 for weight loss in non-deficient individuals Explore underlying concerns about weight and energy levels, addressing these through appropriate channels Signpost to evidence-based resources such as NHS weight management services according to local pathways Patients should contact their GP if they experience unexplained fatigue, neurological symptoms (numbness, tingling, balance problems), or signs of anaemia (pallor, breathlessness, palpitations), as these may indicate B12 deficiency requiring investigation