Two species of Demodex mites specifically inhabit human follicles. And not just some people’s— nearly everyone is thought to host mites. One person’s face might harbor hundreds or even thousands of individual mites. On any given day,...

Seasonal illnesses from infectious diseases aren’t a new concept, but a few decades ago public health experts began to notice the same behavior in some non-infectious diseases like breast cancer. These patterns have helped us learn a lot...

Why do we sleep? We spend a third of our lives in slumber, but science has yet to determine exactly why we have do it. Here's a look at how sleep works, why we're not getting enough sleep, what happens if you DON'T sleep, and an idea...

When you think of a brain, you probably imagine that pink, wrinkly organ in your skull, but we don’t have to stop there! Neither the brain’s functions, nor its cells, are confined to the organ we normally think of as the brain.

If you celebrate American Thanksgiving, odds are you're full of food and pretty sleepy right about now. While you drift off for a post-feast nap, enjoy this compilation of episodes covering all kinds of different sleepy, science-y topics!

What happens when you don't sleep? And why do we need to do it anyways? Hank explains the science of sleep: the cause, the benefits, and who holds the record for going without it!

More than half of Americans take a dietary supplement, but the truth is, most people don't need them. There are, however, a handful of supplements that can be helpful in some situations!

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When the ancestor of cetaceans went back into the water some 50 million years ago, it left a few things behind—including the functioning of certain genes that seem like they’d be hard to live without.

You've probably heard that some types of light, like the kind that comes from your phone or laptop, can be bad for your sleep if you use them too close to bedtime. But let's be real, nighttime is the best time to binge TV, so are we...

People with ADHD often have problems getting to sleep, but is it the ADHD symptoms that causes the lack of sleep or lack of sleep that cause ADHD symptoms?

Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water soluble and lipid soluble hormones. He then describes the hormones and actions...

Summer, Fall, Winter, Spring. Every new season brings new...diseases.

Humans may not hibernate, exactly, but that doesn't necessarily mean we're totally unaffected by the changing of seasons.

You might think your grandma who wakes up at 4am just needs less sleep than younger people. Not so! Studies suggest there are some bizarre reasons older people rise at the crack of dawn, including something called brain sand!

Paul Andersen explains how genotypes can be expressed or not based on changes in the environment. He starts with a brief description of the Himalayan rabbit and how melanin production can be disrupted by high temperature. He explains...

Tired of being a night owl? Science says you can rewire your sleep-wake cycle, or "chronotype," but it's not as simple as setting an early alarm. We break down the genetic and environmental factors and share the slow, steady, and...

Howcast - Learn how to diagnose insomnia from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Howcast - Learn the top three sleep tips for children and teens from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Howcast - Learn about the different types of childhood insomnia from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Howcast - Learn how to create a bedroom the is conducive to sleep from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Howcast - Learn how to treat insomnia caused by shift work from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Howcast - Learn how to treat insomnia with melatonin from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Howcast - Learn about five sleeping pill side effects from sleep specialist Priyanka Yadav, D.O. in this Howcast video.

Howcast - Learn how computer use can cause insomnia from sleep specialist Priyanka Yadav, D.O. in this Howcast video.