ScienceDaily
Only one workout helped older adults lose fat without losing muscle
Older adults looking to shed fat without sacrificing muscle may have found their answer in high-intensity interval training. A six-month study of more than 120 adults in their 70s found that HIIT was the only exercise format to reduce body fat while preserving lean muscle mass. Moderate and low-intensity workouts produced some fat loss but fell short on the muscle-retention front — a critical distinction as muscle decline accelerates with age.
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Millions take omega-3 fish oil for brain health but a new study found no benefit
Omega-3 fish oil supplements are widely taken to protect brain health, but a new two-year study found no meaningful improvement in memory, cognition, or Alzheimer's-related brain changes — even when the supplements successfully delivered omega-3s to the brain. The findings deal a significant blow to the notion that popping a daily pill can ward off cognitive decline. Researchers say the focus should shift toward broader dietary patterns and lifestyle habits rather than isolated supplementation.
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Common pesticide linked to more than double the risk of Parkinson’s disease
Researchers at UCLA have found that long-term exposure to chlorpyrifos, a widely used pesticide, more than doubles the risk of developing Parkinson's disease. The chemical appears to attack the brain on two fronts, destroying dopamine-producing neurons while also impairing the brain's natural defense against toxic protein accumulation. The findings add mounting scientific pressure to restrict a pesticide that remains in agricultural use across much of the United States.
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12 billion years old, this interstellar comet is older than our solar system
Astronomers have identified an interstellar comet estimated to be 12 billion years old, predating the formation of our solar system by several billion years. The object, detected by the ATLAS alert system, is passing through our cosmic neighborhood and offers a rare window into the early universe. Its ancient origins make it one of the most scientifically significant visitors ever observed in our solar system.
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James Webb uncovers exotic salt clouds on a mysterious pink world
Astronomers have used the James Webb Space Telescope to solve a decade-long mystery surrounding a distant exoplanet dubbed the "Pink Planet," located 57 light-years away. The telescope detected a cocktail of atmospheric chemicals including water vapor, methane, carbon dioxide, and ammonia — along with salt clouds, a feature never before directly confirmed on a world of this type. The findings mark a significant leap in our ability to characterize alien atmospheres in unprecedented chemical detail.
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