Engineers at the University of California San Diego created a smart ring that simultaneously and continuously monitors up to four different chemical biomarkers from finger sweat. The biomarkers the smart ring can monitor in sweat are glucose, ketones, vitamin C, uric acid, lactate and alcohol.

Skeletal muscle is one of the first tissues to decline with age. This decline can lead to weakness, scarring, fat accumulation inside muscle and the loss of fast-twitch muscle fibers that are important for quick, powerful movements.

Researchers have conducted one of the most comprehensive studies on how the autistic brain processes faces. Some hallmark characteristics of autism include tendencies to avoid looking at others' faces and to make less eye contact. Many autistic individuals have a harder time remembering faces and recognizing facial emotions than their neurotypical counterparts.

A new mouse study led by UCLA Health suggests that inflammation during pregnancy can trigger autism-like changes in offspring, but those brain and behavioral effects may be rapidly, though temporarily, reversible in adulthood with a single dose of the immunosuppressive drug rapamycin.

Cambridge scientists have solved the mystery of why both stimulating and blocking a particular "switch" in the brain can help people lose weight—findings that could help boost the effectiveness of obesity drugs.

Depression is among the most common psychiatric disorders, estimated to affect between 280 million and 332 million people worldwide. This disorder is characterized by persistent sadness and hopelessness, low energy, a loss of interest in everyday activities and sometimes changes in appetite or sleep.

Research suggests people who often use cannabis start their day with higher cortisol levels than people who don't, indicating a relationship between frequent cannabis use and a possible dysregulation of the body's daily stress rhythms.

SCN2A-related developmental epileptic encephalopathy (DEE) is a rare, severe form of childhood epilepsy and one of the most common causes of monogenic autism. The condition is caused by single mutations in the sodium voltage-gated channel alpha subunit (SCN2A) gene, which controls the flow of sodium ions into neurons. These mutations promote abnormal brain excitability, resulting in uncontrolled seizures along with developmental delays, autism, movement problems and gastrointestinal issues. Most of these mutations are de novo (not inherited from a parent) and arise spontaneously.

Sleep is known to be essential for survival, as it allows both humans and other animals to rest, while the brain consolidates memories and clears out metabolic waste products. For many people worldwide, however, falling asleep at a reasonable time every evening and sleeping enough hours is challenging, due to various conditions such as insomnia, circadian rhythm disorders, depression and anxiety.

Biomedical engineers at Duke University have developed an injectable biomaterial that helps transform the cavity left behind after a stroke caused by a blood clot into an environment more supportive of repair. By recruiting the body's own immune cells, the treatment promoted the growth of new blood vessels, supported neural remodeling and improved motor performance in mice. The work appears in Cell Biomaterials.