07/04/2026
What does B12 actually do in the body?
Vitamin B12 is essential for cellular energy production and nervous system function.
At a biochemical level, B12 acts as a cofactor in key reactions, including:
• Methylation – supports DNA synthesis, neurotransmitter production, and detoxification
• Conversion of homocysteine to methionine – important for cardiovascular and brain health
• Mitochondrial energy production – helps convert nutrients into ATP (usable cellular energy)
• Myelin formation – maintains the protective sheath around nerves for proper signaling
When B12 is low or not well utilized, these processes slow down.
This can lead to:
• reduced energy production
• impaired nerve function
• changes in mood and cognition
• elevated homocysteine (inflammation risk)
So while B12 is often thought of as an “energy vitamin,” its role is much deeper — it supports how your cells function at a fundamental level.
At LifeThyme, we focus on supporting these underlying processes, not just chasing numbers.
Because when your cells function well, everything else follows.
Book online: https://lifethymewellness.janeapp.com/