The Claim

In female rats consuming 13% (w/v) HFCS-55 for 8 weeks, hepatic export of triglycerides via lipoprotein secretion is not increased, whereas consumption of sucrose is associated with up-regulation of microsomal triglyceride transfer protein, indicating that HFCS-55 impairs the liver’s ability to clear excess fat.

Source: High-fructose corn syrup-55 consumption alters hepatic lipid metabolism and promotes triglyceride accumulation.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
16score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

Female rats fed a diet with 13% HFCS-55 for 8 weeks showed no increase in the liver's export of triglycerides, while rats fed sucrose showed increased activity of a protein involved in fat transport, indicating HFCS-55 reduces the liver's capacity to remove excess fat.

See the scientific wording

In female rats consuming 13% (w/v) HFCS-55 for 8 weeks, hepatic export of triglycerides via lipoprotein secretion was not increased, unlike in rats consuming sucrose, which showed up-regulation of microsomal triglyceride transfer protein, suggesting HFCS-55 impairs the liver’s ability to clear excess fat.

Why this might work

When fructose from HFCS-55 enters the liver, it triggers the production of new fat molecules and blocks the breakdown of existing fat. At the same time, it prevents the liver from packaging fat into particles that can be shipped out to other tissues. This causes fat to build up inside liver cells.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: High-fructose corn syrup-55 consumption alters hepatic lipid metabolism and promotes triglyceride accumulation.

    Rats that drank HFCS-55 couldn’t get fat out of their liver as well as rats that drank sugar water, so their livers got greasier. The sugar in HFCS-55 seems to block the liver’s fat-export system.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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