Center for BrainHealth® recently examined underlying brain networks in long-term cannabis users to identify patterns of brain connectivity when the users crave or have a desire to consume cannabis. While regional brain activation and static connectivity in response to cravings have been studied before, fluctuations in brain network connectivity had not yet been examined in cannabis users. The findings from this study will help support the development of better treatment strategies for cannabis dependence.
In a new study in rotifers (microscopic invertebrates), scientists tested the evolutionary fitness of older-mother offspring in several real and simulated environments, including laboratory culture, under threat of predation in the wild, or with reduced food supply. They confirmed that this effect of older maternal age, called maternal effect senescence, does reduce evolutionary fitness of the offspring in all environments, primarily through reduced fertility during their peak reproductive period. They also suggest an evolutionary mechanism for why this may occur.
Incarceration and police discrimination may contribute to HIV, depression and anxiety among Black gay, bisexual and other sexual minority men, according to a Rutgers led study.
Getting married early in life may increase the risk of problematic drinking behavior among people who are genetically predisposed to drink more, according to a forthcoming study led by researchers at Virginia Commonwealth University.
New research reported in the journal Psychological Science finds that priming people to think about accuracy could make them more discerning in what they subsequently share on social media.
A small pilot study provides an early glimpse of how some veterans struggling with PTSD may benefit from one simple, inexpensive treatment involving nitrous oxide, commonly known as laughing gas.
As emerging data shows an alarming rise of domestic violence during the pandemic, researchers at the University of South Australia are urging practitioners to look beyond clinical observations and focus on the strengths that mothers exercise to protect their children from domestic abuse.
New research published today in The Journal of Physiology shows that 12 weeks of easy-to-administer passive stretching helps improve blood flow by making it easier for your arteries to dilate and decreasing their stiffness.
States with the highest level of income inequality had a larger number of COVID-19-related deaths compared with states with lower income inequality. For instance, New York state, with the highest income inequality, had a mortality rate of 51.7 deaths per 100,000. This is 125 times greater than Utah, the state with the lowest income inequality and which had a mortality of 0.41 per 100,000 at the end of the period studied.
Motile sperm are difficult to collect with a conventional cell sorter because they are vulnerable to physical damage. A Japanese research collaboration has developed a technique using a cell sorter with microfluidic chip technology to reduce cell damage and improve in vitro fertilization rates. This research is expected to increase in vitro fertilization rates to improve production of experimental animals and livestock, and could be used as a fertility treatment in reproductive medicine.