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Both peptides lack tumor-promoting activity in published studies, and neither affects cortisol, prolactin, or other hormonal axes
doi: 10.1089/10507250152484547
10.1016/j.nicl.2022.103152 58
The wide deficiency prevalence range reported among vegans 5 to 52% in a 2024 Proceedings of the Nutrition Society study reflects the dramatic difference between those who supplement consistently and those who do not
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