Most people associate cortisol with the “fight or flight” response. While this biochemical indeed functions as a stress hormone—and can have negative effects in excess—it is a necessary hormone for a variety of human biological functions. It is produced from cholesterol in the adrenal glands, which sit directly on top of the kidneys. It is released […]
Our Ancestors Slept in Two Cycles, Should We?
Do you really need eight straight hours of sleep to feel healthy and well-rested? Evidence suggests that our ancestors flourished using a practice known as segmented sleep. Historians and biologists both investigated how we slept in the past, both to understand daily habits back then and to understand how we should be sleeping now. Interestingly, […]
ADHD Linked to Circadian Rhythm Disruption
ADHD and related disorders have increased to almost epidemic levels in the United States. Research suggests that circadian rhythm disruption may play a key role. Attention deficit/hyperactivity disorder, also known as ADHD for short, is a common problem in the Western world. Around 11 percent of American children have been diagnosed with the disorder, but it is […]
Memory Consolidation Linked to Specific Activity During Sleep
Do you have trouble sleeping? Do you have a poor memory? New research on memory consolidation suggests these two very different symptoms may be related. Difficulties with memory are a common problem, affecting almost 13 percent of people over the age of 60 years and a sizable proportion of younger people as well. While this common and […]
Melatonin Shown to be Effective in the Prevention of Migraines
Migraines and other headaches are a challenge to treat—even with the best modern medical care. New research suggests melatonin may be an effective prevention tool. If you have ever had a migraine, you likely did not forget the experience. While there are a few medications that can prevent this problem, these are ineffective for many […]
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