The Science Behind Metabolic Timing The human body operates on a 24-hour circadian clock that regulates countless biological processes, including metabolism, hormone production, and cellular repair
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A deficiency of vitamin B12 can also cause shortness of breath or heart palpitations, as well as gastrointestinal symptoms including constipation, diarrhea, appetite loss, or gas
for neutral grounding on indications and biology, see Vitamin B12 Health Professional Fact Sheet , which outlines deficiency care and dosing context for clinicians
Going beyond 500mcg rarely provides additional benefit and may increase the likelihood of mild side effects like headaches or injection site reactions
Other common symptoms of B12 deficiency include: Lethargy or a total lack of energy Extreme fatigue Palpitations Pale skin Feeling faint Breathlessness Weight loss and loss of appetite Your doctor may prescribe B12 injections in extreme cases that take effect right away
