Below a specific threshold, FCP exerts a protective effect, but above that threshold the protective effect becomes uncertain.

Ekberg and colleagues proposed that in type 1 diabetes a deficiency of C peptide, a subunit of the proinsulin molecule, also contributes to nerve damage; their animal studies showed that C-peptide ...

Ma et al. report the results of a long-term survival study that assessed the role of prediagnostic BMI and plasma C-peptide concentration in prostate-cancer-related mortality. These results show ...