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ScienceDaily · 13 Sept 2026 · Supplements / medicine

Most men don’t know dairy is linked to prostate cancer risk

Survey plus prior observational literature. A Morning Consult poll of 1,102 U.S. men for the Physicians Committee for Responsible Medicine found only 20% knew dairy had been associated with higher prostate-cancer risk in earlier studies, while 66% said they would consider avoiding dairy after hearing that claim; only 20% recalled nutrition advice from a clinician. Cited observational work includes a 32-study meta-analysis and cohorts linking higher milk or low-fat dairy intake with higher incidence. Association is not proof that dropping dairy prevents cancer. Advocacy-funded survey. Educational diet notes, not a prescription to eliminate dairy.

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Medical Xpress · 11 Sept 2026 · Supplements / medicine

Deep-sleep loss linked to Alzheimer’s-related protein buildup in new study

Study. UC Berkeley neuroscientist Omer Sharon and colleagues, directed by Matthew Walker, report in Nature Neuroscience (Sept. 11, 2026) that frontal-cortex tau in cognitively healthy older adults tracks with shorter, less synchronized non-REM slow waves and poorer overnight episodic-memory retention. EEG compared adults in their early 20s with adults in their mid-60s to mid-70s; PET with William Jagust showed tau where traveling slow waves originate. A second cohort’s spinal-fluid tau/amyloid ratios pointed the same way. People did not have clinical Alzheimer’s; memory change was within a normal age range. Association is not proof that tau causes memory loss, and the study does not license a sleep supplement. Educational sleep notes, not a diagnosis.

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Medical Xpress · 11 Sept 2026 · Supplements / medicine

Brain aging may be detected decades before symptoms appear, with links to gut health

Study (observational). UCLA Health researchers (Kanhao Zhao, senior author Arpana Church) report in eBioMedicine on nearly 1,500 adults across three groups. A Brain Aging Index from resting brain-network scans that looked older than chronological age tracked with poorer working memory and executive function and more depressive symptoms. In one group, stool profiles (fat molecules, a cholesterol-related compound, lower estetrol) associated with a higher index, pointing to immune, vascular, neuronal, and energy pathways. This is cross-sectional, not a probiotic trial. A commercial gut product for brain age is weakly evidenced. Food-first fiber is educational, not a treatment.

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