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Metaxas C, Mathis D, Jeger C et al (2017) Early biomarker response and patient preferences to oral and intramuscular Vitamin B12 substitution in primary care: a randomized parallel-group trial
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Recent posts on r/Biohackers include a vagus nerve stimulator trial, red light device content, HRV tracking through fermented foods, cognition tracking with a CO2 monitor, and plenty of self-experimentation around hormones and recovery
Research emphasizes that research grade must be backed by third-party testing (COA) to ensure safety [5]
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