Type 2 diabetes becomes more dangerous to the heart the longer a person has it. Researchers found that after several years, red blood cells can begin interfering with healthy blood vessel function. This harmful shift was not present in newly diagnosed patients but emerged over time. A small molecule inside blood cells may help flag rising cardiovascular risk early.

A new blood test may reveal Crohn’s disease years before symptoms begin. The test detects an unusual immune response to gut bacteria in people who later develop the condition. By studying healthy relatives of Crohn’s patients, researchers identified early warning signals long in advance. The findings raise hope for earlier diagnosis and future prevention.

A new study reveals that super agers over 80 have a distinct genetic edge. They are much less likely to carry the gene most associated with Alzheimer’s risk, even when compared with other healthy seniors. Researchers also found higher levels of a protective gene variant in this group. Together, the findings help explain why some people age with remarkably youthful minds.

Scientists found that nasal cells act as a first line of defense against the common cold, working together to block rhinovirus soon after infection. A fast antiviral response can stop the virus before symptoms appear. If that response is weakened or delayed, the virus spreads and causes inflammation and breathing problems. The study highlights why the body’s reaction matters more than the virus alone.

Scientists studying genetic data from over a quarter million people have uncovered new clues about what controls how fast the gut moves. They identified multiple DNA regions linked to bowel movement frequency, confirming known gut pathways and revealing new ones. The biggest surprise was a strong connection to vitamin B1, a common nutrient not usually linked to digestion.