10/30/2025
“Normal” doesn’t always mean optimal.
In functional medicine, one thing we often teach patients is that just because your lab results fall within the normal range doesn’t mean your body is functioning at its best.
It’s common to experience symptoms or subtle dysfunction even when labs appear “normal,” because most reference ranges are far too broad.
We regularly see people at both the low and high ends of these ranges for a variety of labs who feel noticeably better once their levels are optimized.
A 2025 study on vitamin B12 highlighted this perfectly. Researchers found that even in healthy older adults, B12 levels on either end of the normal range were linked to brain changes and cognitive symptoms.
👉 Those with lower but within normal range, B12 levels showed slower processing speeds, more white matter damage on MRI, and poorer cognitive performance. Their average B12 was 414.8 pmol/L, well above deficiency cutoffs, yet still associated with measurable decline.
👉 Meanwhile, those with higher B12 levels also showed signs of neurodegeneration.
This research suggests that current B12 guidelines may be set too low, and that maintaining balance, not just avoiding deficiency, is key for brain health.
That’s why at Elevated Health and Wellness, we love using lab testing to identify your optimal nutrient levels, not just “normal.”
Book a consultation today to have your nutrient levels assessed, B12 and beyond. It could be a big piece of your journey toward health!