Its also vital for mental health
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Have a look at your previous tests, I think NHS only look at TSH and free T4 which doesn't always give an accurate picture of the thyroid
Pregnant women having extremely high B12 levels due to overdose increases the risk of autism spectrum disorder in their unborn child," said (Ms) Roshan Kore, senior dietitian and nutritionist, SRCC Children's Hospital, managed by Narayana Health (Haji Ali, Mumbai) New Delhi Feb 8, 2023 08:20 AM IST First published on: Feb 8, 2023 at 08:20 AM IST A water-soluble vitamin, B12 is offered as a dietary supplement, and a prescription drug, and is also naturally found in some foods
According to NICE Clinical Knowledge Summaries, once B12 deficiency is adequately treated and symptoms resolve, routine monitoring of serum B12 levels is generally unnecessary, as clinical response is the primary indicator of treatment effectiveness