MediQuest Society

Scientists reveal how breathwork unlocks psychedelic bliss in the brain

High ventilation breathwork while listening to music was associated with reports of blissful states and reduced negative emotions, accompanied by increased blood flow to emotion-processing brain regions.

Breathwork while listening to music may induce a blissful state in practitioners, accompanied by changes in blood flow to emotion-processing brain regions, according to a study published August 27, 2025, in the open-access journal PLOS One by Amy Amla Kartar from the Colasanti Lab in the Department of Clinical Neuroscience at Brighton and Sussex Medical School, U.K., and colleagues. These changes occur even while the body's stress response may be activated and are associated with reporting reduced negative emotions.

The popularity of breathwork as a therapeutic tool for psychological distress is rapidly expanding. Breathwork practices that increase ventilatory rate or depth, accompanied by music, can lead to altered states of consciousness (ASCs) similar…

Why the human body has so many design flaws

Many of the body's biggest flaws are the result of evolution building on old designs instead of starting over. Our spine, eyes, teeth, pelvis, and even certain nerves all reveal compromises that worked well enough for survival but still leave us prone to pain, injury, and disease. Structures like the appendix and ear muscles also remain because they were never harmful enough for evolution to eliminate. Together, these features tell the story of a body shaped by history rather than perfection.

The human body is often described as a marvel of “perfect design”: elegant, efficient and finely tuned for its purpose. Yet, when we look closer, a rather different picture emerges.

Far from being a flawless machine, the body reads more like a patchwork of compromises shaped by millions of years of evolutionary tinkering. Evolution does not design structures from scratch.…

Popular sugar substitutes linked to faster brain aging

Several popular sugar substitutes may not be as harmless as they seem. Adults who consumed the most artificial sweeteners showed substantially faster declines in memory and thinking, especially if they were under 60 or had diabetes. The highest intake was linked to cognitive aging roughly 1.6 years faster than the lowest intake. Researchers stressed that more studies are needed before concluding that sweeteners are the cause.

Several widely used sugar substitutes may be associated with faster declines in memory and thinking skills over time, according to research published in Neurology, the medical journal of the American Academy of Neurology.

The study followed nearly 13,000 adults and examined seven sweeteners that contain little or no calories. People who consumed the largest total amounts showed a more rapid decline in cognitive abilities than those who consumed the smallest amounts. The association was especially strong…

Why grandparents matter more than ever for children's mental health

A child psychologist says grandparents are more important than ever as youth mental health challenges continue to rise. He argues that children need supportive relationships, meaningful conversations, and a sense of purpose—not just pressure to achieve. Grandparents can help by listening, encouraging, and creating positive experiences that strengthen emotional resilience.

With more than 40% of U.S. teenagers reporting ongoing feelings of sadness or hopelessness, one child psychologist believes grandparents may be an important part of the solution.

Kenneth Barish, Ph.D., Clinical Professor of Psychology at Weill Cornell Medicine, says the decline of extended family involvement has helped fuel what the U.S. Surgeon General has described as a continuing crisis in child and adolescent mental health.

"We did not evolve to raise children with as little extended family and community support as most American parents have now," says Dr. Barish, a…