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The most common cause of Vitamin B12 deficiency is a lack of intrinsic factor, a protein the stomach produces that is essential for B12 absorption
Incretin receptor agonists, including tirzepatide, may potentially increase the risk of thyroid C-cell tumors based on findings in animal studies
Baseline characteristics of survivors and non-survivors are summarized in Supplemental Table 1
It's the fastest-growing peptide search term globally, the most studied cosmetic peptide in existence, and one of the few ingredients where the clinical evidence matches the consumer enthusiasm
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