Brain Disease

AAAS Science: Hardcore pot smoking could damage the brain’s pleasure center

Nora Volkow, the director of the National Institute on Drug Abuse in Bethesda, Maryland, decided to take a closer look at the brains of marijuana abusers. For help, she and her team turned to another drug: methylphenidate (aka Ritalin), a stimulant known to increase the amount of dopamine in the brain. The researchers gave methylphenidate […]

Bioscience Technology: Study Pinpoints Damage Alcohol Causes to the Brain

New research has identified, for the first time, the structural damage at a molecular level that excessive alcohol abuse causes to the brain. The study, led by The University of Nottingham, detected the loss and modification of several key cellular proteins in the brains of alcoholics. Published in the academic journal PloS ONE, the research […]

ABC: Cerebral palsy may be inherited, new research suggests

New research has found cerebral palsy, a disability of the brain linked to problems in pregnancy or birth, may have an inherited cause. Researchers in Norway found families where a close relative has cerebral palsy are at increased risk of giving birth to a child with the condition. The investigators trawled through a top-quality database […]

USA Today: Stroke rates and deaths fall in large U.S. study

People are having fewer strokes and dying less often in the wake of strokes, at least in four U.S. communities followed closely over more than two decades. Results from the study, published Tuesday in the medical journal JAMA, help explain and expand upon nationwide statistics showing stroke deaths dropping over recent years. Those statistics are […]

Food for Breast Cancer: Significant improvements in chemo brain are typical within three years

Chemotherapy has been shown to produce measurable brain damage and appears to produce cognitive impairment in part by disrupting the formation of new nerve cells (neurogenesis) in the brain. Chemo brain generally improves greatly within a few years (perhaps as neurogenesis resumes), but can have lingering effects that persist for decades. However, even in such […]

The Gazette: Montreal researchers make Alzheimer’s breakthrough

A Montreal team of researchers has found a genetic variant that protects against and delays the onset of Alzheimer’s disease. The study revealed that certain natural and frequent genetic variants could postpone Alzheimer’s disease by up to four years. The team from the Douglas Mental Health Institute and McGill University is led by Dr. Jules […]

Counsel and Heal: US Scientists Show that Marijuana Does Up Anxiety, Depression Risk

Smoking marijuana can significantly increase a person’s risk of depression and anxiety, according to a new study. New research reveals that people who use marijuana have brains that are less capable of responding to dopamine, the neurotransmitter that triggers motivation for seeking reward. American researchers said that the latest findings support previous studies suggesting that […]

Medscape: New Hypertension After 80 Linked to Lower Dementia Risk

New results from the 90+ Study show that new hypertension after 80 years of age is not only not a risk factor for dementia but is actually associated with reduced risk. In a longitudinal study of participants aged 90 years and older without dementia at study entry, researchers report that those who developed hypertension between […]

Bloomberg: Alzheimer’s Cases Severely Underestimated in Developing Nations

Alzheimer’s cases are greatly underestimated in East Asia, Sub-Saharan Africa and Colombia, researchers said, which may lead to poor policy making and inadequate health-care services. Alzheimer’s Disease International revised their global estimate of people with dementia to 44 million people from 36 million, based on a review of studies presented today at the Alzheimer’s Association […]