A glucose-centric perspective of hyperglycemia.
Level 5 - mechanism / opinion, no new human data
Narrative review of biochemical mechanisms, pathophysiology, and therapeutic targets with no new human data.
What was done
This narrative review summarizes normal postprandial glucose regulation, glycogen storage pathways, mechanisms of insulin resistance, and the biochemical consequences of chronic hyperglycemia. It also reviews mechanistic targets for glucose-lowering approaches, including metformin, alpha-glucosidase inhibitors, insulin mimetics, and non-caloric artificial sweeteners.
What was found
The abstract reports established physiological baseline parameters: postprandial glucose flux (>200 g) traverses a 4–6 g blood pool over ~2 hours to maintain concentrations of 80–120 mg/100 mL, with excess stored as glycogen in the liver (up to 100 g) and skeletal muscle (up to 300 g). Prolonged blood glucose elevations (≥8 mM) promote indiscriminate protein amino-group glycation, with fructose being 10-fold more reactive than glucose. The review notes that three non-caloric artificial sweeteners (saccharin, sucralose, and aspartame) have been associated with glucose intolerance. No original trial data, sample sizes, or quantitative comparative statistics are reported in the abstract.
Why it matters
It outlines the central physiological mechanisms linking postprandial glucose handling defects to protein glycation and end-organ complications, framing the biochemical challenges in restoring normal glycogen storage.
Limits
As a narrative review, it lacks a systematic literature search, risk-of-bias assessment, or original empirical data. The abstract makes broad mechanistic assertions without citing primary trial characteristics, sample sizes, or quantitative effect estimates.
Cited by
- supports The human liver holds approximately 100 grams of glycogen and muscles hold between 400 and 500 grams, totaling roughly 2,000 calories of glycogen storage.