Arrhythmia, an irregular heart rhythm problem: With an arrhythmia, the heartbeat can be fast (tachycardia) , unusually slow (bradycardia), varies from a typical heart rhythm, or combines all three
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anxiety on the other hand tends to go through the roof these days but that's built up in my 40s and I don't think it has anything to do with the B12
L-carnitine in health and disease: Drug, nutrient, and exercise interactions
In metabolically active tissues, fatty-acid handling may involve CD36, plasma-membrane fatty-acid-binding protein, and fatty-acid transport proteins, although their relative contribution depends on tissue and physiological state
no completed efficacy trials of the TB-500 fragment