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This was accompanied by increased growth arrest and decreased apoptosis in nutrient-deprived cell lines

Serious but rare adverse effects include pancreatitis, gallbladder disease, acute kidney injury (usually secondary to dehydration from gastrointestinal symptoms), and hypoglycemia when combined with insulin or sulfonylureas

This cyclical structure is what makes it sustainable as a long-term longevity tool

[2] It functions primarily as an antioxidant, with intracellular concentrations reaching up to 20 mM in cells

BioMed Central, Rodriguez-Acevedo, Astrid J., et al

Many turn out unsafe, but one appears to stand the test of time: peptides