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A powerful system of Atlantic Ocean currents (/topic/ocean-currents) can change far more abruptly than scientists once thought. New evidence from sediments collected off Brazil’s northeastern coast shows that the Atlantic Meridional Overturning Circulation (/topic/atlantic-meridional-overturning-circulation) , or AMOC (/topic/amoc) , experienced sudden bursts of strengthening thousands of years ago, even while the system was otherwise much weaker. The finding comes from researchers in [...]

While abdominal obesity and low Vitamin D levels can individually increase risk of cardiovascular and metabolic dysfunction, their coming together in a person makes it a deadlier soup. In adults 50 years of age or more, this combination increases risk of death by 123 per cent over six years, research from Brazil has found out. The findings, published in the journal Diabetes, Obesity and Metabolism, have found that when these two health conditions occur together, they tend to amplify each [...]

A comprehensive study involving over 5,500 adults aged 50 and older has unveiled a critical health concern concerning the intersection of abdominal obesity and vitamin D deficiency. Those who exhibited both conditions faced a staggering 123% increased risk of death compared to individuals without either health issue. This alarming finding was reported in the journal Diabetes, Obesity and Metabolism , illuminating the particularly dangerous interplay between these two prevalent health [...]

Scientists just discovered a new frog, Adenomera varcena, in the flooded forests of Brazil's Upper Jurua River. What makes it stand out? It doesn't have the usual dark spot on its forearm and has a slow, unique mating call. The team confirmed it using DNA tests and sound recordings. Amazon varzea discovery raises conservation concern Adenomera varcena is the first of its kind spotted in the Amazon's varzea (an area that floods regularly) while its relatives prefer [...]

Scientists from Brazil and other countries have discovered a previously unknown frog species in the flooded forests of the western Amazon, highlighting the region's largely unexplored biodiversity and the hidden diversity of species that can look remarkably alike. Named Adenomera varcena, the new frog was identified in the Upper Juruá River region of western Acre, Brazil, during expeditions to forest fragments near the Moa and Crôa rivers, close to Cruzeiro do Sul. The findings were [...]

According to a study conducted in Brazil by researchers at the Federal University of Sao Paulo (UNIFESP) with participants from the Sao 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 combination of omega-3 and low-dose acetylsalicylic acid (ASA) produced results comparable to antibiotics in treating severe periodontitis. This conclusion is based on a study conducted by researchers affiliated with Albert Einstein Israelite Hospital, Guarulhos University (UNG), the University of Taubaté (UNITAU), and the Ribeirão Preto School of Dentistry at USP (FORP-USP) in Brazil, as well as Harvard University in the United States. The findings were published in May in the Journal of [...]

For the first time, a group of biologists and engineers from the University of São Paulo (USP) in Brazil applied LiDAR (light detection and ranging) technology to investigate the health of trees and optimize pruning with the aim of reducing the risk of trees falling. This laser-sensing technology creates a “point cloud,” a kind of 3D digital mold consisting of millions of coordinates that reproduces the plant’s exact architecture in a computer. The researchers used this replica to [...]

Bacteria previously found only in Asia and the USA have been discovered for the first time ever in Brazil among the farmed fish and the finding poses a huge threat to the country's booming aquaculture industry. Researchers found four species of the genus Flavobacterium in 11 bacterial isolates. These are known to cause columnaris disease, a serious disease in fish intended for human consumption. Six isolates were F. oreochromis, while the collection also included F. davisii, F. indicum [...]