Uterine aging linked to poorer pregnancy outcomes after 49 despite donor eggs

A major new study suggests that age-related changes in the uterus may contribute to poorer pregnancy outcomes, with women aged 49 and older experiencing lower live birth rates and higher miscarriage risk despite donor-oocyte treatment. Presented at the 42nd Annual Meeting of the European Society of Human Reproduction and Embryology (ESHRE), the findings challenge the assumption that donor eggs can fully "reset" the reproductive clock by eliminating the effects of reproductive aging.

Speaking another language could slow aging in the brain

People who speak more than one language seem to have younger brains, according to research presented at the Federation of European Neuroscience Societies (FENS) Forum 2026. Our brains are made up of billions of nerve cells that need to communicate with one another. As we age, connectivity in our brains tends to deteriorate and, as a result, our memory and the speed of our thinking also decline.

Allergies show a small but significant link to later cancer risk

A systematic review and meta-analysis of 28 cohort-based studies found a weak but statistically significant association between allergic diseases and later cancer incidence. The signal was strongest in the Western Pacific region and among people with asthma, but high heterogeneity and limited subgroup evidence mean the findings require caution.

AI model identifies where snoring starts in the airway

A new study developed a snore-source classification model that uses STFT spectrograms, pretrained CNN features, and an L2-regularized SVM to identify where snoring originates in the upper airway. Tested on the MPSSC dataset, the approach achieved a 67.1% test-set unweighted average recall, the highest value among the compared methods, but still needs external clinical validation.

Swiping-based dating apps show strongest ties to compulsive use and body dissatisfaction

A meta-analysis of 27 studies involving 21,263 adults linked swiping-based dating app use to small-to-moderate adverse mental health correlates, especially compulsive use, body image concerns, and appearance-related anxiety. General well-being was not significantly associated with app use in the primary analysis, and the authors stressed that mostly cross-sectional evidence cannot prove causality.