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Ultra-processed food consumption linked to declines in physical function in older adults

A new study found that ultra-processed food consumption is associated with smaller but significant declines in physical function, including slower gait speed and weaker grip strength in men. Limiting UPF intake may be crucial for preserving physical function and supporting healthy aging.

SourceHebrew SeniorLife Hinda and Arthur Marcus Institute for Aging Research·JournalNutrients·TypeData/statistical analysis·DateOct 30, 2025

How micronutrients have shaped human DNA

Researchers found genetic adaptations in response to micronutrient shortages and surpluses, particularly in regions with iodine-poor soils. The study provides insights into the impact of micronutrient availability on human evolution, highlighting potential vulnerabilities to deficiencies as climate change affects soil nutrient levels.

SourceCell Press·JournalThe American Journal of Human Genetics·TypeObservational study·DateSep 10, 2025

New study finds distinct city-specific gut microbiota linked to diet

A new study reveals that the human gut microbiota can pinpoint an individual's city of residence with high accuracy, strongly linked to each city's characteristic diet. The researchers identified unique microbial signatures and interaction networks between cities in China, shedding light on how local environments shape our inner biology.

SourceBGI Genomics·JournalFrontiers in Microbiology·DateJul 23, 2025

Nighttime pistachio snacking may reshape gut microbiome in prediabetic adults

A new study found that consuming pistachios every night for 12 weeks altered bacteria in the gut of adults with prediabetes, increasing beneficial short-chain fatty acids like butyrate. The changes may offer long-term health benefits, potentially slowing Type 2 diabetes development or reducing inflammation.

SourcePenn State·JournalCurrent Developments in Nutrition·TypeRandomized controlled/clinical trial·DateJul 14, 2025

Long-term obesity and biological aging in young adults

Chronic health issues may emerge from long-term obesity in young adults, leading to epigenetic alterations, telomere attrition, and impaired nutrient sensing. The study found a significant association between long-term obesity and accelerated biological aging, highlighting the importance of addressing obesity early on.

SourceJAMA Network·JournalJAMA Network Open·DateJul 11, 2025

Decoding the prognostic power of muscle strength in cirrhosis management

Research review finds handgrip strength is a reliable predictor of cirrhosis complications and outcomes, including malnutrition, muscle loss, cognitive impairment, hepatic encephalopathy, and mortality. Regular HGS assessments can inform timely personalized interventions to enhance patient quality of life.

SourceChinese Medical Journals Publishing House Co., Ltd.·JournalPortal Hypertension & Cirrhosis·TypeLiterature review·DateJul 10, 2025

Cascading impacts of groundwater input to coral reefs

A new study found that submarine groundwater discharge increases nutrient availability, alters seawater acidity, and impacts coral skeleton calcification. This research provides insights into the complex interactions between land and ocean, highlighting the importance of keeping groundwater free of contaminants for coral reef health.

SourceUniversity of Hawaii at Manoa·JournalEcological Monographs·TypeObservational study·DateJun 26, 2025

Insulin on edge: Study identifies stress-triggered gene behind diabetes

Researchers at Osaka Metropolitan University have identified the REDD2 gene, which is activated by metabolic stress and damages pancreatic β-cells, leading to reduced insulin secretion and the onset of diabetes. Suppressing REDD2 expression protects β-cells from damage, even under stress from overeating, preventing the onset of diabetes.

SourceOsaka Metropolitan University·JournalJournal of Biological Chemistry·TypeExperimental study·DateJun 24, 2025

A combination of exercise and omega-3 reduces the severity of tooth root infections

A study published in Scientific Reports found that a combination of exercise and omega-3 supplementation significantly improves the immune response and reduces the severity of chronic apical periodontitis. The researchers induced apical periodontitis in rats, dividing them into three groups: one received no intervention, while the othe...

Nutrients strengthen link between precipitation and plant growth, study finds

A new study found that nutrient availability plays a crucial role in the relationship between precipitation and plant biomass. In grasslands, plant biomass increases with higher mean annual precipitation, but nutrient availability also comes into play. Fertilizing sites with multiple nutrients boosted plant growth and biomass, revealin...

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalProceedings of the National Academy of Sciences·DateApr 17, 2025

Reprogramming gut cells to treat small bowel syndrome

Researchers have successfully reprogrammed part of the large intestine to function like the nutrient-absorbing small intestine, reversing malnutrition in a preclinical study. The technique, which deletes the colon gene SATB2, restored nutrient absorption and improved survival rates in mice with short bowel syndrome.

SourceWeill Cornell Medicine·JournalGastroenterology·DateApr 3, 2025

Microbial manners on the high seas

A new study found that microbes in the Sargasso Sea take turns using phosphorus, a critical nutrient for growth, to avoid competition between species. This temporal resource partitioning strategy supports coexistence and efficient nutrient use in this oligotrophic region.

SourceUniversity of Tennessee at Knoxville·JournalProceedings of the National Academy of Sciences·DateApr 1, 2025

Nature’s viny vampire: Discovering what drives parasitic Cuscuta campestris

Researchers at Osaka Metropolitan University identified the CcMCA1 gene as a key player in the development of haustoria, structures that allow Cuscuta campestris to feed on host plants. Suppressing this gene expression can reduce the number of haustoria per centimeter, offering potential for controlling invasive plant species.

SourceOsaka Metropolitan University·JournalPlant and Cell Physiology·TypeExperimental study·DateMar 27, 2025

Scientists call for targeted fibre diets to boost health

A new classification system classifies dietary fibres into five key features, providing a more nuanced understanding of their health impacts. The researchers argue that current classifications are simplistic and do not capture the diverse structures and complex mechanisms through which dietary fibres influence human physiology.

SourceRMIT University·JournalFood Research International·TypeSystematic review·DateMar 19, 2025

Discovery: The great whale pee funnel

Whales play a critical role in moving nutrients across ocean basins through horizontal transport in their urine. Scientists estimate that great whales transport approximately 4,000 tons of nitrogen each year to low-nutrient coastal areas in the tropics and subtropics.

SourceUniversity of Vermont·JournalNature Communications·TypeObservational study·DateMar 10, 2025