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Diet Soda Tentatively Linked to Dementia, Stroke 
You may have seen headlines touting a newly-discovered link between diet soda consumption and the diseases dementia and stroke. There are, however, some pretty big “maybe”s that go along with that claim. Ars Technica describes the real bottom line: https://arstechnica.com/science/2017/04/study-claims-a-link-between-diet-sodas-and-stroke-and-dementia/

Exercise Sharpens Mind for Over-50 
Once again, a study has found a link between physical activity and mental acuity. This dovetails with studies showing a link between mental exercise and brain health. To be perfectly clear, however, this does not mean that thinking about exercise is enough. The BBC reports: http://www.bbc.com/news/health-39693462

Antibacterial Toothpaste May Promote Superbugs in Gut 
Some toothpaste manufacturers include triclosan, purportedly to combat gingivitis. A recent study, while limited, found troubling evidence that triclosan disrupts the gut’s microbiome, in a variety of ways, some of which are implicated in the development of drug-resistant pathogens. Ars Technica has details: https://arstechnica.com/science/2017/04/bacteria-killing-toothpastes-may-be-good-for-your-teeth-bad-for-your-gut/

Recent Saturated Fat Headlines “Misleading” 
It turns out that recent headlines, which you may have seen, calling into question the accepted benefits of a low-fat diet, are questionable in themselves. Cherry-picked statistics and spurious conclusions are among the criticisms leveled against the research. Also worth noting, the researcher in question gets his money from the meat and drug industries. Ars Technica has more: https://arstechnica.com/science/2017/04/experts-headline-grabbing-editorial-on-saturated-fats-bizarre-misleading/