The Claim

A one-standard-deviation increase in genetically predicted insulin sensitivity index is associated with a 9.2% lower odds of coronary heart disease, independent of genetic predisposition to artificial sweetener intake.

Source: Effects of artificial sweeteners on coronary heart disease: A 2-way 2-sample Mendelian randomization study and mediation analysis

What the research says

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Supports
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Challenges
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Correlation
1 study reviewed
In plain English

People with genetic variants linked to better insulin sensitivity have a 9.2% lower chance of developing coronary heart disease, regardless of their genetic tendency to consume artificial sweeteners.

See the scientific wording

Genetically predicted insulin sensitivity index is associated with a 9.2% lower odds of coronary heart disease per standard deviation increase, independent of genetic predisposition to artificial sweetener intake.

Why this might work

When the body responds better to insulin, it controls blood sugar and fat levels more effectively. This prevents excess fat from building up in blood vessel walls and stops the lining of blood vessels from becoming damaged. As a result, arteries stay open and flexible, reducing the chance of blockages that cause heart attacks.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Effects of artificial sweeteners on coronary heart disease: A 2-way 2-sample Mendelian randomization study and mediation analysis

    The study found that people who are genetically more likely to have better insulin sensitivity (how well the body uses sugar) have a lower risk of heart disease, even when considering their genes for drinking diet soda. So yes, better insulin sensitivity seems to protect the heart.

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

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