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A deficiency in vitamin B12 can disrupt key functions in the body that will lead to excessive hair shedding

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In fact, cobalamin deficiency is a common cause of metabolic encephalopathy, one of a number of forms of encephalopathy associated with a primary disease (such as FIP) that causes interference with normal brain function and blood-brain barrier mechanisms

Table of Contents How Vitamin B12 Deficiency Affects Hair Growth Recognising the Signs of B12 Deficiency in the UK Other Common Causes of Hair Loss to Consider Getting Tested and Diagnosed Through the NHS Treatment Options for B12 Deficiency and Hair Recovery When to Speak to a GP About Hair Loss and B12 Levels Scientific References Frequently Asked Questions How Vitamin B12 Deficiency Affects Hair Growth B12 deficiency may disrupt follicle cell replication and contribute to telogen effluvium, but the link is associative rather than directly causal, and any effect is likely mediated through anaemia reducing oxygen to the scalp

Physicians may prescribe compounded medications as needed to meet patient requirements or drug shortages