Plunging into the ocean near Antarctica, Lewis Pugh was determined to push the limits of human endurance

When Prozac was introduced in 1987, it made a big splash as the first selective serotonin reuptake inhibitor (SSRI) antidepressant for the treatment of major depressive disorder. Prozac and Sarafem are brand names for a drug called "fluoxetine," which was first discovered by Eli Lilly in 1972. Since the patent for this drug expired in 2001, fluoxetine is available as a generic FDA-approved prescription for depression, obsessive-compulsive disorder, panic attacks, and some eating disorders.

Already heat-stressed countries will see the largest absolute increases in humid-heat and have the least ability to adapt.

A tribe of nomadic divers has evolved larger spleens to allow them to catch fish more than 200 feet underwater, scientists have discovered.

Freud’s notion of a dark, libidinous unconscious is obsolete. A new theory holds that the brain produces a continuous stream of unconscious predictions

Researchers found evidence that fasting affects circadian clocks in the liver and skeletal muscle, causing them to rewire their metabolism, which can ultimately lead to improved health and protection against aging-associated diseases.

Among the goals of the group, called the Academy for Health and Lifespan Research, are to share findings and lobby governments in the United States, Europe, and elsewhere to increase funding and create pathways to approve age-slowing therapies.

For millions of sperm it is the end of the road. Scientists have found evidence that the female reproductive tract is shaped in such a way that stops poor swimmers from reaching their goal. Researchers used small-scale models and computer simulations to show that pinch points that behave like gates along the sperm’s arduous path from cervix to egg allow only the fastest ones through. Tests with sperm from men and bulls revealed that the strongest swimmers were most likely to make it through the tight spots, known as “strictures”, while weaker ones were caught in oncoming currents that propelled them backwards when they got too close.

Taking a young person’s plasma and infusing it into an older person to ward off aging -- a therapy that’s fascinated some of the biggest names in Silicon Valley -- has no proven clinical benefit, the Food and Drug Administration said.

In the past, nighttime exercisers have been issued a warning: going hard around bedtime could lead to sleeplessness, but an increasing number of studies, including a study published Wednesday in Experimental Physiology, are showing that late-night exercise doesn’t disrupt sleep like previously thought.

You can’t get adequate UVB exposure sitting indoors or in a car.

It's a beautiful idea, when you think about it: You can leave the old you behind and become a completely new person every seven years. Unfortunately, it's just not true. Chances are you can't actually remember where you heard this, but the truth is that the seven-year myth isn't even a rough average of every cell's lifespan.

Men and women can’t feel each other’s pain. Literally. We have different biological pathways for chronic pain, which means pain-relieving drugs that work for one sex might fail in the other half of the population. So why don’t we have pain medicines designed just for men or women? The reason is simple: Because no one has looked for them. Drug development begins with studies on rats and mice, and until three years ago, almost all that research used only male animals. As a result, women in particular may be left with unnecessary pain—but men might be too.

A new study published in the Journal of Applied Physiology adds to evidence that the two are linked: Those who sit the most benefit the least from a given amount of exercise

Jo Cameron is one of two people on Earth known to have a mutation that means she feels almost no pain.

A slowing rate of improvement hints at a looming asymptote, at least on a population-wide basis

You probably don't know second leading cause of cancer, because the scientists have only recently made the connection.  It's obesity.

Clumps of proteins found in the brains of people who have Parkinson's disease are also found somewhere else in the body — inside the appendixes of healthy people. This finding has led researchers to study the link between the appendix and the risk of developing Parkinson's. For example, an October 2018 study found that removing the appendix was associated with a decreased risk of developing the disorder, Live Science reported.

Emotional stress may trigger an irregular heart beat, which can lead to a more serious heart condition later in life, new research shows. New research shows how two proteins that interconnect in the heart can malfunction during stressful moments, leading to arrhythmia, according to a study published Wednesday in Molecular Cell.

Modern humans and Neanderthals may have diverged a long, long time ago, at least 800,000 years back.