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A B-vitamin-deficient diet caused cognitive impairment and cerebral vascular changes without evidence of neurodegeneration in mice. These findings provide new insight into the mechanisms that may underlie human age-related cognitive decline.

In May 2006, an agreement was reached by the Alliance for a Healthier Generation and the American Beverage Association on voluntary sales restrictions on "competitive foods" such as soft drinks at schools. However, researchers now say limiting the availability of soft drinks at school may not be enough to affect overall consumption among elementary school children.

New research shows that black and white Americans responded differently when exposed to a video presentation that described Hurricane Katrina and then blamed the botched relief efforts on one of two causes: either government incompetence or racism, because the majority of Katrina's victims were black.

Deep brain stimulation, a surgical technique often viewed as a last resort for people with Parkinson's disease, halts the progression of dopamine-cell loss in animal models, according to preliminary research.

Scientists have discovered that a gene controlling whether blood vessels differentiate into arteries or veins during embryonic development is linked to a vascular disorder in the brain that causes stroke.

Scientists have designed, developed and tested new molecular tools for stem cell research to direct the formation of certain tissue types for use in drug development programs.

A new study has finally resolved a controversy that cellular biologists have been arguing over for nearly 50 years, with findings that may aid research on everything from birth defects and genetic diseases to the most classic "cell division" issue of them all -- cancer.

The sooner an individual who has had a heart attack is treated, the better their chance of survival and the less permanent damage is done to their heart. A recent paper details a new method for early detection of a heart attack that researchers used to observe changes in the blood of individuals who had had a heart attack as soon as 10 minutes after the event.

Worldwide, about 80% of young adults are infected with herpes simplex virus type 1 (HSV-1). The most common symptom of infection is a cold sore, but in some individuals the virus can also cause life-threatening inflammation of the brain (encephalitis); 70% of individuals who do not get treatment for this condition die.

The motor neuron disease spinal muscular atrophy (SMA) is the second most common genetic disorder leading to death in childhood. There is currently no cure for SMA, but some clinicians and researchers consider stem cell transplantation as a potential therapeutic strategy. And now, work using a mouse model of SMA suggests that spinal cord neural stem cells might be a possible treatment for individuals with SMA.