How Did 500 Species of a Fish Form in a Lake? Dramatically Different Body Clocks

Despite the dramatic difference between day and nightlife, how fish exploit different times of day has not been studied systematically. Scientists explored alterations in the circadian timing of activity and the duration of rest-wake cycles in Lake Malawi’s cichlids and identified the first single nocturnal species. Timing and duration of rest and activity varies dramatically, and continuously, between populations of Lake Malawi cichlids, providing a system for exploring the molecular and neural basis underlying variation in nocturnal activity.

Spring forward your clock, but don’t fall back on your sleep

Daylight saving time is one week away, and as many look forward to the longer and warmer days that accompany this time change, losing an hour of sleep can have you feeling out of sorts. An expert with The University of Texas Health Science Center at Houston (UTHealth) shares why it’s important to prepare our bodies for the time change.

Good sleep is just what doctor ordered

In a study released Feb. 22 in JAMA Internal Medicine researchers found that six 20-minute telephone calls over eight weeks coaching participants on how to get better sleep improved their sleep, pain, and daytime function. The improvements in sleep and daytime function persisted 12 months after treatment. One of the lead investigators who has been researching age and sleeping for 40 years offers great tips on getting better sleep. Just because you are aging, does NOT mean your sleep needs to get worse.

Young Athletes Need their Sleep to Achieve Top Performance

DETROIT (February 9, 2021) – As Michigan high school student athletes get back to sports competition this week, most are not getting the sleep they need to perform at their best, said Meeta Singh, M.D., a nationally recognized sleep medicine specialist at Henry Ford Health System. Many young athletes simply don’t focus on getting the sleep they need to recover from training and the energy they expend playing their sport, which ultimately affects performance on game day.

Resolve to achieve healthy sleep in 2021

According to a recent survey from the American Academy of Sleep Medicine, 85% of U.S. adults do not get the recommended seven hours or more of sleep every night. With the new year comes the opportunity for Americans to reset habits to include making healthy sleep a priority.

Hengen awarded $1.8M to study sleep’s contribution to brain function

Sleep is vitally important for brain function and survival. Yet sleep remains one of the most poorly understood features of life. Keith Hengen, assistant professor of biology in Arts & Sciences at Washington University in St. Louis, received a three-year $1.8 million grant from the National Institutes of Health (NIH) to study the role of sleep and waking behavior in shaping the brain’s neural dynamics.

Mapping Cavefish Brains Leads to Neural Origin of Behavioral Evolution

While studied for nearly a century, little is known about how cavefish brains differ. A study is the first to look inside their brains with millimeter resolution to start to understand how the individual neurons and brain regions that drive complex behaviors, including sleep and feeding have evolved. This work has broad implications for the understanding of how brains evolve in many different animal models and is hoped to be widely used by the scientific community.

Sleep and diabetes study receives $3M grant

Getting more sleep, and establishing a regular sleep schedule, is a common recommendation for maintaining and improving health, including for people with Type 1 diabetes. Short sleep patterns may affect how the body uses insulin, and irregular sleep schedules can affect glucose through changes in one’s circadian rhythm or biological clock.