Brain cells receive sensory inputs from the outside world and send signals throughout the body telling organs and muscles what to do. Although neurons comprise only 10% of brain cells, their functional and genomic integrity must be maintained over a lifetime. Most dividing cells in the body have well-defined checkpoint mechanisms to sense and correct DNA damage during DNA replication.
How wildfire smoke and ash impact your health and how to protect yourself
The fires raging in Los Angeles have destroyed thousands of structures, and the death toll is rising. Along with the wildfires, residents must deal with other hazards: smoke and ash.
Mosquitoes in Australia may be carrying Japanese encephalitis this summer—What to know if you’re spending time outdoors
A Victorian man is reportedly in a critical condition in hospital after contracting Japanese encephalitis from a mosquito bite.
With more Americans able to access legalized marijuana, fewer are picking up prescriptions for anti-anxiety medications
In states where both medical and recreational marijuana are legal, fewer patients are filling prescriptions for medications used to treat anxiety. That is the key finding of my recent study, published in the journal JAMA Network Open.
Aging in Australia as an African migrant
Aging or living with a disability can be a confronting experience for many older people and their families.
Mice’s sex-based social preferences shift under stress: Dopamine circuits play crucial role
Researchers from Xi’an Jiaotong University and collaborating institutions in China have identified sexually dimorphic dopamine (DA) circuits in the brain that influence sociosexual preferences in mice. They found innate preferences for social interactions with female mice are reversed under survival stress, with both male and female mice switching to male preference.
Study finds opioid pain medications very infrequently prescribed to NFL players
Due to the physical contact nature of their occupation, the elite athletes of the National Football League (NFL) often experience pain. However, an analysis of 2021 and 2022 data from the National Football League Prescription Drug Monitoring Program shows that team members in those two years were even less likely than both the general U.S. population and males of similar age living in the U.S., to have a prescription for an opioid pain medication.
Accidental drug and alcohol-related deaths rising in Ontario, especially those involving multiple substances
A new report from researchers at the Ontario Drug Policy Research Network and Public Health Ontario shows the number of accidental drug and alcohol toxicity-related deaths continued to rise dramatically from January 2018 and December 2022.
New device shows promise in early oral cancer detection tests
A prototype of a new oral cancer diagnosis device, developed by the University of Liverpool, has demonstrated promising results during preliminary tests on histopathology specimens.
Fewer delays, more launches of cancer drugs found in higher income countries
The development of new drugs is critical in treating cancer—if people have access to them. A team co-led by Penn State researchers identified cancer drugs launched between 1990 and 2022 and found that counties with higher gross national income per capita typically had more launches and shorter launch delays.