2+ day, 23+ hour ago  (831+ words) New analysis of long-running family records has pushed the estimated genetic share of human lifespan to about 55 percent, more than double the influence long cited in biology and public health. By separating the random ways in which people die from…...

4+ day, 14+ hour ago  (782+ words) Across 117 different species of mammals, animals that were prevented from having offspring showed increased life expectancy, surviving about 10 percent longer than those that reproduced. The findings suggest that the physical demands of reproduction, including pregnancy and hormone activity, may shorten…...

4+ day, 17+ hour ago  (1091+ words) If you watched a bunch of animals living in identical conditions, you'd expect them to age in roughly similar ways." But in a new study from Stanford, short-lived fish with similar genetics still aged very differently " and the weird part…...

1+ week, 2+ day ago  (827+ words) A randomized trial, focused on twins over the age of 50, reports that a daily mix of protein and prebiotics improved performance on a sensitive memory test after 12 weeks. Scientists have been mapping how the gut microbiome communicates with the brain…...

1+ week, 2+ day ago  (1031+ words) Most Americans assume aging is basically a slow slide: your body stiffens, your mind dulls, and the best you can do is "manage the decline." Many doctors assume the same thing. But a new Yale University study argues that this…...

1+ week, 3+ day ago  (1100+ words) For decades, scientists have debated whether long life is mostly a matter of healthy habits or inherited biology. A new analysis suggests the balance may tilt more strongly toward genes than previously thought. By reexamining decades of twin records, researchers…...

2+ week, 5+ day ago  (819+ words) Many people accept aging as something that simply happens. Cancer, heart disease, and dementia become more common over time. For years, scientists tried to fight each disease separately. Now, many researchers are asking a bigger question. What if science could…...

3+ week, 13+ hour ago  (1038+ words) Only a tiny slice of Switzerland's population makes it past 100 years old " about 0.02 percent. That rarity raises a simple question: Do people who reach 100 have measurable biological traits that set them apart from everyone else? A team working on the…...

3+ week, 4+ day ago  (1100+ words) For decades, scientists have debated whether long life is mostly a matter of healthy habits or inherited biology. A new analysis suggests the balance may tilt more strongly toward genes than previously thought. By reexamining decades of twin records, researchers…...

3+ week, 6+ day ago  (980+ words) What actually happens in the brain when the heart stops? For decades, medicine has treated cardiac arrest as a near-instant boundary " circulation ceases, oxygen drops, and awareness fades within seconds. But new brain monitoring during attempted resuscitation suggests the story…...