The Claim

Genetically predicted leisure screen time, including television watching and computer use, is associated with a 62% increased probability of obesity in individuals of European ancestry, and this association is supported by genetic expression patterns in adipose tissue involving cortisol and insulin pathways.

Source: Sedentary behavior, physical activity, sleep duration and obesity risk: Mendelian randomization study

What the research says

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Supports
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Challenges
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Correlation
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In plain English

People with genetic patterns linked to more screen time have a 62% higher likelihood of obesity, and this link is connected to gene activity in fat tissue related to cortisol and insulin.

See the scientific wording

Genetically predicted leisure screen time (LST), encompassing television watching and computer use, is associated with a 62% increased probability of obesity in individuals of European ancestry, and this association is supported by genetic expression patterns in adipose tissue linked to cortisol and insulin pathways.

Why this might work

People born with certain genes that make them more likely to sit and use screens for long periods also have genes that change how their fat tissue behaves. These changes cause the fat tissue to produce more stress hormone, reduce how well insulin controls blood sugar, and slow down the body's natural calorie-burning rate. Together, this leads to more fat storage and less energy use, making obesity more likely.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Sedentary behavior, physical activity, sleep duration and obesity risk: Mendelian randomization study

    People who are born with genes that make them more likely to watch TV or use computers for fun are also more likely to become obese, and this is because those same genes affect how fat tissue responds to stress and sugar hormones in the body.

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

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