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According to a study conducted in Brazil by researchers at the Federal University of São Paulo (UNIFESP) with participants from the São Paulo Epidemiological Sleep Study (EPISONO 2018), people with hypothyroidism experience a higher frequency and severity of obstructive sleep apnea (OSA). The results also indicated that patients receiving hormone replacement therapy for thyroid dysfunction slept longer and spent more time in deep sleep. The researchers from UNIFESP's Department of [...]

A tiny diamond from Brazil has provided scientists with remarkable new evidence that water may travel much deeper into Earth’s interior than previously thought. Hidden inside the small gemstone, researchers discovered a mineral that appears to survive the crushing pressures and intense heat of the lower mantle, suggesting it could help carry water hundreds of kilometers beneath the planet’s surface. The study, published in Scientific Reports, was carried out by a team of Brazilian [...]

University of São Paulo researchers have built the first regional oxygen map for Amazon wood from 387 trees at 25 sites, with a Federal Police forensic scientist among the 17 authors and 240,000 square kilometres still beyond the model's reach. Brazilian scientists have mapped the oxygen locked inside Amazon wood closely enough to exclude 92 per cent of the forest as the origin of any seized log. That is according to Luiz Antonio Martinelli, a professor at the Center for Nuclear Energy [...]

A team of Brazilian researchers discovered the first direct evidence that goethite – the mineral responsible for the brown color of soils – can withstand extreme pressures and temperatures all the way to the planet's interior inside a diamond just 3 millimeters long, within a microscopic impurity. Goethite forms in soil and on the ocean floor from iron-rich minerals in the presence of water. It incorporates some of these water molecules into its mineral structure. The study suggests [...]

"An island of biodiversity in a sea of monoculture": this is how a recent stud characterized the Pimentel Barbosa Indigenous Territory (TIPB), located in the northeast of the state of Mato Grosso in Brazil's Central-West region. The study showed that the area's human occupation patterns and vegetation cover have remained largely unchanged for four decades. Meanwhile, the surrounding area has been altered by the expansion of livestock ranching, soybean farming, and the construction of [...]

Exposure to secondhand cigarette smoke during the first days of life can cause changes in tooth enamel mineralization without causing visible changes to the teeth. This was demonstrated in an animal model study conducted by researchers at the Ribeirão Preto School of Dentistry at the University of São Paulo (FORP-USP) in Brazil. The results were published in May in the scientific journal Calcified Tissue International. The research was conducted in the Department of Pediatric Dentistry [...]

For the first time in Brazil, scientists have identified the presence of bacteria that cause columnaris disease, a serious disease in farmed fish intended for human consumption. Previously, different species of the genus Flavobacterium had only been detected in fish farms in Asia and the United States. This disease primarily affects farms raising Nile tilapia (Oreochromis niloticus), also known commercially as Saint Peter, a species of African origin. However, it also affects farms raising [...]

Exposure to secondhand cigarette smoke during the first days of life can cause changes in tooth enamel mineralization without causing visible changes to the teeth. This was demonstrated in an animal model study conducted by researchers at the Ribeirão Preto School of Dentistry at the University of São Paulo (FORP-USP) in Brazil. The results were published in May in the scientific journal Calcified Tissue International.  The research was conducted in the Department of Pediatric [...]

A map showing the distribution of isotopes in Amazonian tree wood can help identify illegally harvested timber. By analyzing the ratio of different isotopes of elements such as oxygen, carbon, nitrogen, and strontium, researchers can pinpoint the region where the wood was harvested more precisely. This helps combat the illegal timber trade. Illegal logging is one of the main causes of deforestation in the Amazon. Environmental agencies and law enforcement in Brazil use various tools to [...]