They disrupt fundamental cellular processes, including energy production, insulin signaling, glucose metabolism, and mitochondrial function, at times contributing to cognitive decline, fatigue, reduced ability to fight infections, and increased chronic disease risk
However, these observational studies have inherent limitations, including potential residual confounding (as some registries lack complete data on important cancer risk factors like smoking), selection bias, and the challenge of detecting rare events
PMC / Cureus
[ON THE EFFECT OF INSULIN ON THE NAD-SYSTEM AND THE PHOSPHORYLATION OF ADENINE [PMID: 14169598] Laboratory literature summary: [ON THE EFFECT OF INSULIN ON THE NAD-SYSTEM AND THE PHOSPHORYLATION OF ADENINE NUCLEOTIDES IN THE LIVER]
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According to FDA prescribing information, these include nausea (occurring in 1544% of patients depending on the agent and dose), vomiting, diarrhea, constipation, and abdominal pain