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Some analyses show 12-58% of products contain contamination, 30% have incorrect amino acid sequences, 65% exceed endotoxin safety thresholds, and 20% are mislabeled entirely
On the downside, theyre more expensive and must be administered under the supervision of a healthcare professional ( Still, multiple studies have also found oral vitamin B12 supplements to be safe and effective ( Ultimately, consulting a doctor is the safest way to determine which vitamin B12 supplement is best for you
In the withdrawal trial, continuing preserved loss far better than switching to placebo, which regained about 14% over a year. The metabolic benefit fades in proportion to the weight regained, so a taper plus protein and resistance training beats a hard stop
Low B12 in the body is also associated with having poor energy, frequent fatigue, and weakness
Your genetics, stress levels, age, insulin sensitivity, and a variety of other factorscontrollable and notaffect your cravings, metabolism, and body composition
