Orthorexia nervosa links strongly to perfectionism and OCD traits, review shows
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 What drinking kefir really does to your gut and oral microbiomeWhat drinking kefir really does to your gut and oral microbiome
 
The impact of kefir on gut and oral microbiomes shows promise, but inconsistent findings and study limitations call for more rigorous scientific investigation.
 
 
 Orthorexia nervosa links strongly to perfectionism and OCD traits, review showsOrthorexia nervosa links strongly to perfectionism and OCD traits, review shows
 
This umbrella review synthesised five meta-analyses to estimate the reported prevalence of orthorexia nervosa and examine its psychological correlates. Findings show wide variability in prevalence estimates and consistent links with eating disorder symptoms, obsessive-compulsive traits, and perfectionistic strivings, limited by high methodological heterogeneity.
 
   What Americans eat is driving global nutrition researchWhat Americans eat is driving global nutrition research
 
WWEIA data, a cornerstone of national dietary surveillance, drives nutrition research and policy, enhancing understanding of dietary trends and health outcomes.
 
   Everyday light exposure shapes how alert and mentally sharp we feel outside the labEveryday light exposure shapes how alert and mentally sharp we feel outside the lab
 
This real-world study shows that recent and habitual light exposure are linked to lower subjective sleepiness and faster reaction times in daily life. Brighter and more stable daytime light patterns were associated with better performance on specific cognitive tasks, independent of sleep and time of day.
 
   Half of hospitalized COVID-19 patients developed long COVIDHalf of hospitalized COVID-19 patients developed long COVID
 
Research from Thailand shows high long COVID prevalence in hospitalized patients, with severe illness increasing risk and vaccination offering protection.
 
 A new trial investigates whether the MIND diet can be scaled for obesity management
 
A new trial investigates whether the MIND diet can be scaled for obesity managementThis study protocol outlines a 12-week randomized trial testing whether a MIND diet intervention is feasible, acceptable, and sustainable for adults with obesity in Sweden. It will generate preliminary evidence on adherence, mental well-being, and gut microbiota changes to inform larger efficacy trials.
 
 
 Plant-based omega-3s work better than expected in a year-long diet study
 
Plant-based omega-3s work better than expected in a year-long diet studyA year-long, diet-controlled intervention shows that flaxseed oil–derived alpha-linolenic acid significantly increases erythrocyte EPA, DPA, and DHA across omnivorous, vegetarian, and vegan diets. The magnitude of improvement is driven mainly by baseline omega-3 status, while absolute EPA and DHA levels in vegans remain lower than in omnivores.
 
 
 Metabolic syndrome affects nearly four in ten US adults as rates climb in older and Black populations
 
Metabolic syndrome affects nearly four in ten US adults as rates climb in older and Black populationsA large NHANES analysis found that nearly four in ten US adults met criteria for metabolic syndrome between 2013 and 2023, with no statistically significant change in overall prevalence. However, prevalence rose significantly among adults aged 60 years and older and among non-Hispanic Black individuals, alongside a significant non-linear increase in hypertriglyceridemia.
 
 
 Unnecessary gluten-free diets may put children at risk
 
Unnecessary gluten-free diets may put children at riskUnderstanding gluten-related disorders is crucial for pediatric nutrition, as gluten-free diets can pose health risks without appropriate medical supervision.
 
 
 E-cigarette use is linked to higher heart attack risk, especially in former smokers
 
E-cigarette use is linked to higher heart attack risk, especially in former smokersThis systematic review and meta-analysis examined whether electronic cigarette use is associated with myocardial infarction and stroke, synthesizing evidence from 12 observational studies. The analysis found higher odds of myocardial infarction among e-cigarette users, particularly former smokers, while no significant associations were observed among exclusive never-smokers.
 
 
 Sitting harms blood vessel function, but cocoa flavanols can stop it
 
Sitting harms blood vessel function, but cocoa flavanols can stop itThis study shows that cocoa flavanols can preserve endothelial function during sitting, suggesting dietary strategies to mitigate cardiovascular risks.
 
 
 Genes and biological networks that drive long COVID risk
 
Genes and biological networks that drive long COVID riskThis study merges causal genetics and network theory, revealing 32 genes linked to long COVID, offering insights for diagnostics and personalized therapies.
 
 
 High fructose intake increases fatty liver risk
 
High fructose intake increases fatty liver riskExcessive fructose intake from soft drinks is linked to liver damage and NAFLD. Lifestyle modifications are essential for effective prevention and treatment.
 
 
 Intermittent fasting edges daily calorie cuts for blood pressure and long-term cardiovascular risk estimates
 
Intermittent fasting edges daily calorie cuts for blood pressure and long-term cardiovascular risk estimatesIn a real-world registry study of adults with overweight or obesity, 5:2 intermittent fasting and daily calorie restriction both improved blood pressure over 12 weeks. Intermittent fasting produced modestly greater reductions in systolic and pulse pressure and a larger drop in BMI-based 30-year cardiovascular risk scores, without superior lipid or glycaemic effects.
 
 
 Indoor tanning loads normal skin with mutations linked to melanoma
 
Indoor tanning loads normal skin with mutations linked to melanomaIndoor tanning is associated with markedly higher mutation burdens and cancer-driving genetic changes in melanocytes taken from normal-appearing skin, including areas usually protected from sunlight. These molecular alterations provide a biological explanation for the higher odds of melanoma and multiple primary tumors seen in heavy tanning bed users.
 
 
 Couples-based programs boost heart-healthy behaviors
 
Couples-based programs boost heart-healthy behaviorsResearch highlights the need for couple-based interventions in heart disease to focus on emotional support and relationship quality for better health outcomes.
 
 
 In the vast expanses of Indian country, broadband gaps create health gaps, too
 
Standing atop Ferry Butte, Frances Goli scanned the more than half a million acres of Shoshone-Bannock tribal land below as she dug her hands into the pockets of a pink pullover.
 
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