What are the symptoms of Vitamin B12 deficiency according to Dr Emily Leeming?

Dr Emily Leeming notes that fatigue, brain fog, and tingling in hands/feet can indicate a Vitamin B12 deficiency.

Why is milk's vitamin B12 content lower now, according to Quadram Research Institute?

Research from Quadram Research Institute suggests changes in cattle feed have reduced milk's vitamin B12 by 50% since 1996.

What health risks are associated with folate deficiency in women of childbearing age?

Low folate levels in women of childbearing age are linked to an increased risk of neural tube defects in early pregnancy.

Home / Health / Hidden Deficiencies: Tiredness, Fog Linked to Low Nutrients

Hidden Deficiencies: Tiredness, Fog Linked to Low Nutrients

15 Dec, 2025

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Summary

Vitamin B12 deficiency causes fatigue, memory issues, and nerve damage.
Milk's vitamin B12 content has significantly decreased since 1996.
Folate deficiency is high in teenagers and women of childbearing age.

Hidden Deficiencies: Tiredness, Fog Linked to Low Nutrients

Subtle symptoms like fatigue, brain fog, and tingling extremities may indicate significant vitamin and mineral deficiencies. Vitamin B12 deficiency, affecting a considerable portion of the population, impairs brain function and nerve health, with a notable decrease in its levels in milk since 1996. This reduction is thought to be linked to changes in cattle feed.

Beyond B12, iron deficiency is also a concern, impacting oxygen transport and causing symptoms like lightheadedness and cold hands, especially as red meat consumption declines. Folate (vitamin B9) deficiency is prevalent, particularly among teenagers and women of childbearing age, highlighting risks for neural tube defects during pregnancy. Government plans to fortify flour aim to address this critical gap.