Long-Term Cannabis Use Linked to Dementia Risk Factors

Long-term cannabis use is linked to hippocampal atrophy and poorer cognitive function in midlife — known risk factors for dementia. A large prospective, longitudinal study showed long-term cannabis users had an intelligence quotient (IQ) decline from age 18 to midlife (mean 5.5 IQ points), poorer learning and processing speed compared to childhood, and self-reported memory … Read more

One in Three Ukrainian Refugees Could Develop PTSD

According to estimates by the United Nations High Commissioner for Refugees (UNHCR), more than 3 million people have already fled from Ukraine. As of March 18, around 200,000 of these refugees had fled to Germany, according to information from that country’s police force. They are escaping from bombs, tanks, and the destroyed infrastructure of their … Read more

First ‘Before-and-After’ COVID Brain Imaging Study Shows Changes

Editor’s note: Find the latest COVID-19 news and guidance in Medscape’s Coronavirus Resource Center. Even mild cases of COVID-19 are associated with brain changes including decreased gray matter, an overall reduction in brain volume, and cognitive decline, a new imaging study shows. In the first study to use magnetic resonance brain imaging, before and after … Read more