Mindful Eating: A Deep Insight Into Fructose Metabolism and Its Effects on Appetite Regulation and Brain Function.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic concepts without systematic methodology or primary human trial data
PubMed 40297675 · doi:10.1155/jnme/5571686
What was done
This narrative review synthesized the metabolic and neurological pathways of dietary fructose, focusing on regulatory bypass mechanisms in lipogenesis, intestinal clearance capacity, satiety signaling, and downstream effects on hippocampal function and neuroinflammation.
What was found
The abstract reports purely qualitative mechanistic descriptions with no numerical data or effect sizes. It details that fructose bypasses phosphofructokinase-1 (PFK-1) feedback inhibition, provides minimal direct stimulation of insulin secretion (impairing satiety), overwhelms gut clearance at high doses to drive hepatic fat accumulation, and induces reactive oxygen species, mitochondrial dysfunction, and altered brain insulin signaling.
Why it matters
It outlines how excessive dietary fructose consumption may link peripheral metabolic disorders like non-alcoholic fatty liver disease and insulin resistance directly to neurodegenerative risks and cognitive decline.
Limits
This is a narrative review with no systematic search protocol, risk of bias assessment, or quantitative pooling. The underlying mechanistic findings derive substantially from animal and in vitro models, and the abstract notes that human clinical evidence for neurological endpoints remains limited.
Cited by
- supports Fructose blocks insulin-mediated glucose uptake in the hippocampus, which impairs memory acutely and chronically leads to local insulin resistance, mitochondrial dysfunction, glycolysis, and inflammation.