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There are several causes of vitamin B12 deficiency, including dietary factors, medical conditions, and genetic factors
This is a remarkable finding for a biologically active compound
A smaller group describes transient increases
Your brain requires oxygen to support its many functions and to prevent cellular damage that can lead to cognitive decline
Copy number amplification of DNA damage repair pathways potentiates therapeutic resistance in cancer
Nasal route is generally lower-risk for such issues but care must still be taken with formulation, preservation, and absorption variability
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