A comprehensive prospective study tracking over 159,000 adults for up to three decades has provided compelling evidence that multiple healthy dietary patterns protect cognitive function, with the DASH diet demonstrating the most powerful effects. Researchers simultaneously evaluated six dietary approaches—including the Mediterranean-style AHEI-2010, plant-based hPDI, environmentally-focused PHDI, and diets targeting […]
A comprehensive new Cochrane review of 22 studies involving nearly 2,000 participants over six months to one year has found that intermittent fasting may offer little to no significant benefit over standard dietary advice for weight loss in people with overweight or obesity. When compared to regular, calorie-restricted diet plans, […]
A large-scale study involving 103,649 UK Biobank participants has revealed that adhering to healthy dietary patterns is significantly associated with lower mortality rates and a longer lifespan. Over a median follow-up of 10.6 years, researchers found that five specific diets—the Alternate Healthy Eating Index-2010, Alternate Mediterranean Diet (AMED), healthful Plant-based […]
Released in early 2026, the latest U.S. Dietary Guidelines champion a “real food” approach, advising Americans to prioritize whole foods like vegetables, fruits, proteins, and healthy fats while sharply limiting ultra-processed items, added sugars, and artificial additives. This update introduces significant shifts, including a higher daily protein recommendation, a move […]
Even moderate alcohol consumption was consistently linked to a higher risk of multiple cancers, with clear dose–response relationships showing that risk rises with greater frequency and quantity of drinking. In this systematic review of 62 U.S.-based studies, alcohol use was most strongly associated with increased risks of breast, colorectal, and […]
A growing body of evidence shows that ultra-processed foods are displacing traditional, whole-food diets worldwide and driving major diet-related chronic diseases. Drawing on decades of dietary surveys, global sales data, cohort studies, randomized trials, and mechanistic research, this first paper in a three-part Lancet Series reports that ultra-processed foods have […]
Ongoing peer-reviewed evidence supports the safety and effectiveness of vaccines against Covid-19, respiratory syncytial virus (RSV), and influenza during the 2025–2026 season. In a systematic review of 511 studies out of 17,263 identified references, Covid-19 mRNA vaccines targeting the XBB.1.5 subvariant showed pooled effectiveness against hospitalization of 46% from cohort […]
The British Dietetic Association has developed the first comprehensive evidence-based dietary guidelines for the management of chronic constipation in adults. Four systematic reviews and meta-analyses encompassing 75 randomized controlled trials informed 59 recommendation statements, developed through the GRADE framework and Delphi consensus among a multidisciplinary Guideline Steering Committee. The recommendations […]
A US longitudinal population-based cohort study suggests that chronic insomnia, especially with reduced sleep, is a risk factor for cognitive decline and adverse brain health in older adults. Researchers followed cognitively unimpaired participants who underwent annual neuropsychological testing and brain imaging (amyloid-PET and MRI for white matter hyperintensities [WMH]) over […]
A Brazilian longitudinal cohort study suggested that consumption of low- and no-calorie sweeteners (LNCSs) was associated with accelerated cognitive decline. A total of 12,772 civil servants (mean age 52 years, 55% women) were followed over three study waves across eight years. Using dietary questionnaires and cognitive testing, researchers found that […]