More than half of survivors of the Sudan Ebola virus still suffer serious health problems two years post-infection and the virus can persist in semen and breast milk for months after recovery, according to the first study examining the virus’s long-term effects.

Obesity has long been acknowledged as a risk factor for a wide range of diseases, but a more precise link between obesity and Alzheimer’s disease has remained a mystery – until now. A first-of-its-kind study from Houston Methodist found that adipose-derived extracellular vesicles, tiny cell-to-cell messengers in the body, can signal the buildup of amyloid-β plaque in obese individuals. These plaques are a key feature of Alzheimer’s disease.