Diet
Study links heart benefits of low-carb and low-fat diets to food quality, not macronutrient cuts
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A long-running analysis of nearly 200,000 U.S. health professionals found that both low-carbohydrate and low-fat eating patterns were associated with lower coronary heart disease risk when they emphasized high-quality foods such as whole grains, plant-based sources, and unsaturated fats. Versions of these diets built around refined carbohydrates and animal-based fats and proteins were associated with higher risk, according to a study published in the Journal of the American College of Cardiology (JACC).
A new poll reveals that nearly half of U.S. adults do not know processed meat is linked to higher colorectal cancer risk. Conducted by the Physicians Committee for Responsible Medicine and Morning Consult, the survey of 2,202 adults from February 9 to 11, 2026, found strong support for warning labels after respondents learned of the connection. Experts highlight the need for better education amid rising cases in younger adults.
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Building on warnings like the 2025 Lancet series, researchers link ultra-processed foods to health issues including obesity and cancer, though mostly via correlations. A landmark 2019 trial provides the strongest causal evidence by showing overeating on such diets. Debates continue on regulations amid concerns over practicality.
A new Cochrane review of 22 clinical trials shows that intermittent fasting does not lead to greater weight loss than standard diet advice for overweight or obese adults. The analysis, involving nearly 2,000 participants, challenges the popularity of fasting methods amid rising global obesity rates. Researchers emphasize the need for more long-term studies and personalized approaches.
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A new review of studies suggests that intermittent fasting offers no significant advantage over traditional dieting or no intervention for weight loss among overweight or obese adults. Researchers analyzed data from 22 trials involving nearly 2,000 participants. While the approach remains popular, experts highlight limitations in the evidence.
A scientific review in *Critical Reviews in Food Science and Nutrition* concludes that the strongest and most consistent human evidence on wild blueberries points to improved blood vessel function, with additional findings described as promising for blood pressure, blood lipids, blood sugar regulation, gut microbiome changes and some measures of cognition.
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A long-term analysis of more than 200,000 UK Biobank participants found that diets with lower glycemic index values were associated with a lower risk of dementia, including Alzheimer’s disease and vascular dementia, while higher dietary glycemic load was tied to a higher risk.
Six-month ‘Sweet Tooth Trial’ finds changing sweet-tasting foods does not shift sweetness liking or key metabolic markers
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January 28, 2026 20:25Review finds tea—especially green tea—is linked to better health outcomes, but warns processed drinks may undermine benefits