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Ultra-processed foods linked to hidden muscle fat

Mayur Tembhare
  1. The study involved 615 people at risk for knee osteoarthritis who were part of a nationwide research program sponsored by the National Institutes of Health called the Osteoarthritis Initiative.

  2. Researchers found that eating more ultra-processed foods was linked to higher levels of fat inside thigh muscles, even after accounting for calorie and fat intake, physical activity, and sociodemographic factors.

  3. The study's lead author, Dr. Zehra Akkaya, said that the findings add to growing evidence that diet quality may influence body composition in ways not fully captured by measures like BMI.

  4. The researchers used widely available MRI scans to detect changes in muscle tissue, which can appear as fatty degeneration of muscle fibers.

Ultra-processed foods linked to hidden muscle fat

Topic: Health

Researchers found that eating more ultra-processed foods is linked to higher levels of fat inside thigh muscles. This may increase the risk of knee osteoarthritis. The study involved 615 people at risk for knee osteoarthritis.

A recent study has shown a link between eating ultra-processed foods and hidden muscle fat in the thighs.

Ultra-processed foods are convenient, appealing, and long-lasting products that often combine sugar, fat, salt, and carbohydrates. Examples include breakfast cereals, packaged snacks, hot dogs, soft drinks, and frozen pizzas. These foods typically contain synthesized ingredients and can be difficult to stop eating due to their stimulating effect on the brain's reward system.

The study involved 615 people at risk for knee osteoarthritis who were part of a nationwide research program sponsored by the National Institutes of Health called the Osteoarthritis Initiative. The researchers examined data from these participants and found that those who ate more ultra-processed foods had higher levels of fat inside their thigh muscles, even after accounting for calorie and fat intake, physical activity, and sociodemographic factors.

The study's lead author, Dr. Zehra Akkaya, said that the findings add to growing evidence that diet quality may influence body composition in ways not fully captured by measures like BMI. The researchers used widely available MRI scans to detect changes in muscle tissue, which can appear as fatty degeneration of muscle fibers.

The study's results suggest that eating more ultra-processed foods may increase the risk of knee osteoarthritis. This is a significant concern because osteoarthritis is an increasingly prevalent and costly global health issue.

Why It Matters

This research matters to Indian students because it highlights the importance of making healthy food choices to prevent diseases like knee osteoarthritis, which can have a significant impact on quality of life. As India's population ages, understanding the link between diet and disease is crucial for public health.

Key Facts

  • The study involved 615 people at risk for knee osteoarthritis who were part of a nationwide research program sponsored by the National Institutes of Health called the Osteoarthritis Initiative.
  • Researchers found that eating more ultra-processed foods was linked to higher levels of fat inside thigh muscles, even after accounting for calorie and fat intake, physical activity, and sociodemographic factors.
  • The study's lead author, Dr. Zehra Akkaya, said that the findings add to growing evidence that diet quality may influence body composition in ways not fully captured by measures like BMI.
  • The researchers used widely available MRI scans to detect changes in muscle tissue, which can appear as fatty degeneration of muscle fibers.
  • Osteoarthritis is an increasingly prevalent and costly global health issue.

Key Terms

Ultra-processed foods
Convenient, appealing, and long-lasting products that often combine sugar, fat, salt, and carbohydrates.

Implications

This research matters to Indian students because it highlights the importance of making healthy food choices to prevent diseases like knee osteoarthritis, which can have a significant impact on quality of life. As India's population ages, understanding the link between diet and disease is crucial for public health.

Source: https://www.sciencedaily.com/releases/2026/09/260914102452.htm

Journal reference:

  1. Zehra Akkaya, Gabby B. Joseph, Katharina Ziegeler, Wynton M. Sims, John A. Lynch, Virginie Kreutzinger, Charles E. McCulloch, Nancy E. Lane, Michael C. Nevitt, Thomas M. Link. Ultra-processed Foods and Muscle Fat Infiltration at Thigh MRI: Data from the Osteoarthritis Initiative. Radiology, 2026; 319 (1) DOI: 10.1148/radiol.251129

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