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47 articles from ScienceDaily

Thyroid problems linked to increased risk of dementia

Older people with hypothyroidism, also called underactive thyroid, may be at increased risk of developing dementia, according to a new study. The risk of developing dementia was even higher for people whose thyroid condition required thyroid hormone replacement medication.

Upside-down design expands wide-spectrum super-camera abilities

By turning the traditional lab-based fabrication process upside down, researchers have greatly expanded the abilities of light-manipulating metasurfaces while also making them much more robust against the elements. The combination could allow these quickly maturing devices to be used in a wide range of practical applications, such as cameras that capture images in a broad spectrum of light in a...

New study sheds light on why opioids can cause gastrointestinal problems

Opioids are the gold standard for treatment of chronic and acute pain; however, their use may result in significant gastrointestinal side effects, including nausea, vomiting, and constipation. The reasons behind these side effects are not well understood. A new study reports on how opioids like morphine cause gastric inflammation and how this condition can be reversed through treatment with proton...

Citizen scientists from 200 years ago and today help shed light on climate change trends

Citizen science observations across two centuries reveal a dramatic, climate-driven shift to earlier leaf out and flowering, which varies across settings, species and functional groups. Plants in urban areas, insect pollinated trees, and early-season species show the greatest rate of advancement overall. This unprecedented comparison of historic-modern network observations illustrates how...

Using the power of the sun to roast green chile

Roasting green chile is an important cultural touchstone for New Mexico, but it leads to a seasonal emission of approximately 7,800 metric tons of carbon dioxide -- the equivalent of driving 1,700 cars for a year. Sandia National Laboratories engineer Kenneth Armijo, who grew up on a chile farm in Sabinal, located between Albuquerque and Socorro, New Mexico, thought there was a 'greener' way to...

Helping teens channel stress, grow in resilience

The mental health crisis among teens has prompted an urgent quest for preventive interventions. Researchers believe they have one. As the team explains in a recent study, the 30-minute online training module teaches teenagers to channel their stress responses away from something negative that needs to be feared and tamped down towards recognizing those responses -- sweaty palms, a racing heart,...

Safety first: How stigma may impact health

Lack of safety, according to a new theory, may have a direct impact on the health of people in marginalized communities, particularly the LGBTQ community. The theory challenges decades of thinking that health disparities in the LGBTQ community are primarily due to encounters with stressful and discriminatory events, a concept called 'minority stress.'

Imaging solves mystery of how large HIV protein functions to form infectious virus

Scientists have determined the molecular structure of HIV Pol, a protein that plays a key role in the late stages of HIV replication, or the process through which the virus propagates itself and spreads through the body. Importantly, determining the molecule's structure helps answer longstanding questions about how the protein breaks itself apart to advance the replication process. The discovery...

Physicists see electron whirlpools

Physicists have now observed electron whirlpools. Theorists have long predicted electrons should exhibit this hallmark of fluid flow; the findings could inform the design of more efficient electronics.