(September 3, 2010 - Insidermedicine)

From Texas - A new study published in the Journal of the American Geriatrics Society connects PTSD to dementia. Researchers studied nearly 10,500 veterans over 65 years old, finding that those diagnosed with PTSD had significantly raised risk of developing dementia.

From New Hampshire - Research published in the Journal of Health and Social Behavior questions the gateway effect of marijuana. Studying over 1200 young adults, finding that education and employment status had more to do with the use of illicit drugs than marijuana use in adolescence.

And finally, from North Carolina - Scientists have identified genes associated with susceptibility to MRSA, according to a report published in PLoS Pathogens. Studying mice, researchers found that two genes on chromosome 18 that were associated with susceptibility to the deadly staph infection.