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Sami A, Shah FA, Abdullah M, Zhou X, Yan Y, Zhu Z, et al
Iron is absorbed in the Duodenum, most other nutrients in the Jejunum and our friend B12 in the Ileum
It's not every day that a molecule made of just three amino acids becomes the subject of more than a hundred research papers, gets featured in longevity podcasts, and lands on the ingredient list of luxury skincare brands sold in dermatology clinics around the world
Men experience similar changes as testosterone declines, though typically at a more gradual pace
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