Accounting for cell components in saliva increases the reliability of biochemical tests for experience-driven epigenetic changes.
In a student-led study, one hour of mindfulness meditation shown to reduce anxiety and some cardiovascular risk markers.
An experimental compound appears to improve stroke outcome by reducing the destructive inflammation that can continue months after a stroke, scientists report. Rats consuming compound 21 following a clot-based stroke -- the most common type in humans -- don't have a smaller stroke size but do have better memory and movement in its aftermath, says Dr. Adviye Ergul, vascular physiologist and Regents' Professor in the Department of Physiology at the Medical College of Georgia at Augusta University.
Older adults who take an antioxidant that specifically targets mitochondria see age-related changes in blood vessels reverse by the equivalent of 15 to 20 years within six weeks, a new study shows.
The insect moves droplet of saliva in and out of its mouth to promote evaporation and lower body temperature, according to study by researchers in Brazil.
Evidence that humans can genetically adapt to diving has been identified for the first time in a new study. The evidence suggests that the Bajau, a people group indigenous to parts of Indonesia, have genetically enlarged spleens which enable them to free dive to depths of up to 70 meters. The relationship between spleen size and dive capacity has never before been examined in humans at the genetic level.
When their colony is threatened by an intruder, workers of a newly discovered species of ant can actually tear their own body apart, in order to release toxins and either kill or hold off the enemy. Discovered by an interdisciplinary team of researchers from Austria, Thailand and Brunei, the new species is the first of the so-called 'exploding ants' to be described since 1935. The study is published in the open-access journal ZooKeys.
Of the genetically diverse population of HIV-1 viruses present in an infected pregnant woman, the few she might transmit to her child during delivery are resistant to attack by antibodies in her blood, according to new research published in PLOS Pathogens by Amit Kumar of Duke University Medical Centre, North Carolina, and colleagues.
The Bajau, a population of sea nomads in Indonesia, are known for their ability to conduct prolonged and repeated deep dives while holding their breath. A new analysis by University of Copenhagen and UC Berkeley scientists shows that they evolved this ability by enlarging their spleen about 50 percent. A genetic analysis links this to upregulated thyroid hormone. This is a unique adaptation to living in a low-oxygen environment, the researchers say.
The Bajau people of Southeast Asia, known as Sea Nomads, spend their whole lives at sea, working eight-hour diving shifts with traditional equipment and short breaks to catch fish and shellfish for their families. In a study published April 19 in the journal Cell, researchers report that the extraordinary diving abilities of the Bajau may be thanks in part to their unusually large spleens, a rare example of natural selection in modern humans.