People who consume ultra-processed foods have worse muscle health, study suggestsby Radiological Society of North America edited by Sadie Harley, reviewed by Robert Egan Researchers found that a diet high in ultra-processed foods is associated with higher amounts of fat stored inside thigh muscles, regardless of calorie or fat intake, physical activity or sociodemographic factors in a population at risk for knee osteoarthritis. Results of the study were published in Radiology. Higher amounts of intramuscular fat in the thigh could potentially increase the risk for knee osteoarthritis. What counts as ultra-processed foodUltra-processed foods usually have longer shelf lives and can be highly appealing and convenient. They contain a combination of sugar, fat, salt and carbohydrates which affect the brain's reward system, making it hard to stop eating. These foods include breakfast cereals, margarines/spreads, packaged snacks, hot dogs, soft drinks and energy drinks, candies and desserts, frozen pizzas, ready-to-eat meals, mass-produced packaged breads and buns, which all include synthesized ingredients. "Over the past decades, in parallel to the rising prevalences of obesity and knee osteoarthritis, the use of natural ingredients in our diets has steadily diminished and been replaced by industrially-processed, artificially flavored, colored and chemically altered food and beverages, which are classified as ultra-processed foods," said the study's lead author, Zehra Akkaya, M.D., researcher and consultant for the Clinical & Translational Musculoskeletal Imaging group at University of California, San Francisco, Department of Radiology and Biomedical Imaging. Dr. Akkaya and the research team set out to assess the relationship of ultra-processed food intake and intramuscular fat in the thigh. How the study was conductedFor the study, researchers analyzed data from 615 individuals who participated in the Osteoarthritis Initiative who were not yet affected by osteoarthritis, based on imaging. The Osteoarthritis Initiative is a nationwide research study, sponsored by the National Institutes of Health, that helps researchers better understand how to prevent and treat knee osteoarthritis. "Osteoarthritis is an increasingly prevalent and costly global health issue," Dr. Akkaya said. "It constitutes one of the largest non-cancer-related health care costs in the United States and around the world. It is highly linked to obesity and unhealthy lifestyle choices." Of the 615 individuals, (275 men, 340 women) the average age was 60 years. On average, participants were overweight with a body mass index (BMI) of 27. Approximately 41% of the foods they consumed over the prior year were ultra-processed. What the MRIs revealed about musclesThe researchers found that the more ultra-processed foods people consumed, the more intramuscular fat they had in their thigh muscles, regardless of caloric intake. On MRI, this can be seen as fatty degeneration of the muscle, where streaks of fat replace muscle fibers. "In addition to investigating the quality of our modern diet in relationship to thigh muscle composition, in this study, we used widely available, non-enhanced MRI, making our approach accessible and practical for routine clinical use and future studies," Dr. Akkaya said. "These MRIs do not require advanced or costly technology, which means they can be easily incorporated into standard diagnostic practices." By exploring how ultra-processed food consumption impacts muscle composition, this study provides valuable insights into dietary influences on muscle health. Why diet quality matters for joints"This research underscores the vital role of nutrition in muscle quality in the context of knee osteoarthritis," Dr. Akkaya said. "Addressing obesity is a primary objective and frontline treatment for knee osteoarthritis, yet the findings from this research emphasize that dietary quality warrants greater attention, and weight loss regimens should take into account diet quality beyond caloric restriction and exercise." Targeting modifiable lifestyle factors—mainly prevention of obesity via a healthy, balanced diet and adequate exercise—has been the mainstay of initial management for knee osteoarthritis. In addition to other health benefits, reducing ultra-processed food consumption may help preserve muscle quality, which in turn could alleviate the burden of knee osteoarthritis. "In recent years, several researchers have shown detrimental impacts of ultra-processed food on various health outcomes but data on the relationship of ultra-processed food and body composition in the context of knee osteoarthritis is limited," Dr. Akkaya said. "This is the first study assessing ultra-processed food's impact on thigh muscle composition using MRI. By exploring how ultra-processed food consumption impacts muscle composition, this study provides valuable insights into dietary influences on muscle health." ARTICLE SOURCE: https://medicalxpress.com/news/2026-04-people-consume-ultra-foods-worse.html
Hello everyone. I'd like to ask for your attention and help/advice regarding how to follow a Carnivore Diet when you have financial restrictions.
I followed a carnivore diet for 12 months. I wasn't very successful in my weight loss goal. I lost around 15 pounds of fat. (I still have at least another 15 pounds). I am around 22% Bodyfat and my goal is to be under 15BF%
After the 12-month period, I ended up trying a more ketogenic model, but without success in terms of fat loss.
I'm Brazilian and live in São Paulo. Red meat prices have risen considerably. Therefore, I'd like to ask how to follow the Carnivore Diet if I can only afford eggs and hamburger patties.
I'm 180cm tall. My bodyweight is around 175-180 lbs(+- 79kg to 81kgs). I am 36 years old, have a sedentary job. I go to the gym (where I do perform resistance strength training) 3 times a week.(to build and mantain musle mass and improve fat loss) My goal is to lose 12-15 pounds of bodyfat.(until the end of 2025)
I don't know how to calculate how much food I should eat on a Carnivore diet based on eggs and Hamburger patties. (I'll leave some questions here about how to proceed :)
100 grams of Hamburger patties contain:
Calories = 135 kcal
Carbs: 2g
Protein = 11g
Fat = 9g
I man at my size and phisical activive usually ingest 2500kcals to mantain his weight. However, in a Carnivore diet most people dont control calories and sometimes even macros. I tried last year to eat to satiety but after the initial 100 days i was not able to lose bodyfat.
Allow now to aks a few question about how to set a carnivore diet , with the purpose of fat loss while only being able to buy lard, Eggs and Humburger patties(hard financial restrition):
1-How can I figure out how much food (and calories) I should eat to lose weight?
2-Should I count calories or follow the eating-to-satiety model, even if it hasn't worked for fat loss? (not after the initial 100 days of the Carnivore diet).
3-How do I deal with hunger when eating a carnivore diet with the goal of fat loss?
4-Would it be possible to lose 12-15 lbs by the end of this year without going hungry?
Thank you very much for your attention.
Excuse any grammatical errors. English is not my first language.
I look forward to your guidance.