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Certain groups are at higher risk, including older adults (due to reduced stomach acid production), individuals with pernicious anaemia (an autoimmune condition affecting B12 absorption), those who have undergone gastrointestinal surgery, and people with conditions such as Crohn's disease or coeliac disease
Researchers can mix the powder with a suitable liquid to prepare it for their experiments
Feeling drained, sluggish, and lacking energy
Digestive enzymes and stomach acid can break down peptides before they are fully absorbed, which reduces the amount that reaches target tissues
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