Science Daily

1. Closing your eyes to hear better might be a big mistake

   Many people believe closing their eyes sharpens hearing, but that is not always true. In noisy settings, participants struggled more to hear faint sounds with their eyes closed, while matching visuals made it easier. Researchers found that shutting the eyes leads the brain to over-filter incoming sounds. Keeping your eyes open may actually improve how well you hear in noise.

2. Ultra-processed foods linked to 67% higher risk of heart attack and stroke

   Eating large amounts of ultra-processed foods like chips, frozen meals, sugary drinks, and packaged snacks may significantly raise the risk of serious heart problems. In a major U.S. study, people consuming around nine servings per day had a 67% higher risk of heart attacks, strokes, or death from heart disease compared to those eating about one serving. The risk didn’t just jump at high levels either. Each additional daily serving increased the likelihood of these events by more than 5%, even after accounting for calories, overall diet quality, and common health conditions.

3. Belly fat linked to heart failure risk even in people with normal weight

   Carrying extra fat around the waist may be more dangerous than the number on the scale suggests. Researchers found that belly fat was more strongly linked to heart failure risk than BMI, even in people with normal weight. Inflammation seems to play a key role, helping explain why this type of fat is especially harmful. Measuring waist size could offer a simple way to detect hidden risk earlier.

4. The best strength training plan might be simpler than you think

   New strength training guidelines emphasize that doing any resistance training is what truly matters. Based on decades of research, experts say even simple routines can increase muscle, strength, and physical function. The key is not perfection but consistency. In fact, the best workout plan is the one you can maintain long term.

5. Gum disease bacterium linked to breast cancer growth and spread

   A common oral bacterium tied to gum disease may help spark and fuel breast cancer, according to new research. Scientists discovered it can travel through the bloodstream to breast tissue, where it causes DNA damage and speeds tumor growth and spread. It also appears to make cancer cells more aggressive and resistant to therapy. The effect is even stronger in people with BRCA1 mutations, raising new questions about the role of oral health in cancer risk.