Health

Learn about how stress affects the brain and the resilience scale in this scientifically based video (7:42) created by the Alberta Family Wellness Initiative in consultation with the FrameWorks Institute and the Harvard Center on the Developing Child.

Check out this slide show to get an explanation of the various parts of the female reproductive system.

This four minute animated video presents the core story of brain development. Learn how childhood experiences can affect our brains and how we sometimes need our brains to function like 'air traffic control'.

Learn about the stages of our immune response, the types of cell and the difference between our innate immune system and our adaptive immune system - and why vaccines are key to helping our adaptive immune system fight disease - in this short explainer video.

This 6-minute video is a visual and musical journey of the human auditory system. Human's ability to hear is explained with beasts and storms and strange faceless dancing humans armed with larger-than-life ossicles.

This site provides illustrations of the structures and functions of several human body systems, including circulatory, muscular, nervous, respiratory and urinary. Each section includes labeled diagrams, short answer and multiple choice quizzes.

Check out this "human brain atlas" using data from thousands of people, using the same imaging techniques neuroscientists use (MRIs and PET scans) to see inside the human brain.

After a concert, you find it difficult to hear your friend rave about the show because of the ringing in your ears. But the next morning, the effect has mostly worn off. So what caused these symptoms? And can you go to concerts without damaging your ears?

Explore how scientists are developing a flu vaccine that would protect you against every strain— even ones that don’t exist yet.

This 4-minute video from SciShow explains the science of honey's bacteria-killing power.

When we are cut or wounded, our skin begins to repair itself through a complex, well-coordinated process. Sarthak Sinha takes us past the epidermis and into the dermis to investigate this regenerative response.

If you lined up all the blood vessels in your body, they’d be 60 thousand miles long. And every day, they carry the equivalent of over two thousand gallons of blood to the body’s tissues. What effect does this pressure have on the walls of the blood vessels?

Bones might seem rock-solid, but they’re actually quite porous inside. Most of the large bones of your skeleton have a hollow core filled with soft bone marrow. What does bone marrow do?

Bill Schutt explains the history of the life-saving procedure.

This animated video explores the different components of the immune system and how, together, they do their vital work. "Most of the time, you may not even notice it's there, but over the course of your life your immune system will guard you against hundreds of potentially fatal threats."

When you breathe, you transport oxygen to the body’s cells to keep them working, while also clearing your system of the carbon dioxide that this work generates. How do we accomplish this crucial and complex task without even thinking about it?

Why do scars look different from the rest of our skin? And why do they stick around for so long after the incident that caused them? Sarthak Sinha explains how scars form.

Emma Bryce details how the incredible kidneys balance the amount of fluid in your body, detect waste in your blood, and know when to release the vitamins, minerals, and hormones you need to stay alive.

This video explores the balance of microbes in our digestive system and how bacteria can break down food the body can’t digest, produce important nutrients, regulate the immune system, and protect against harmful germs. The video also shares the best foods for a healthy gut.

Can you grow a human bone outside the human body? The answer may soon be yes. This video explains how bones naturally grow inside the body and describes the innovations that scientists are using to replicate that process in a lab.

Originally discovered by accident, X-rays are now used about 100 million times a year in clinics around the world. How do X-rays work? This video describes the history and mechanics of the X-ray machine and CT scanners.

Across the planet, humans eat on average between 1 and 2.7 kilograms of food a day, and every last scrap makes its way through the digestive system. Comprised of ten organs covering nine meters, this is one of the most complicated systems in the body. Emma Bryce explains how the different parts of the digestive system work to transform your food into the nutrients and energy that keep you alive.

Your muscular system is a network of over 650 muscles that covers the body and is the reason we can blink, smile, run, jump, and stand upright. This video heads into the human body to see how our muscular system works.

We live in homes with over 100,000 microscopic species, each with its own set of unique traits and capabilities. Can humans harness these microbial capabilities to create beneficial applications and new technology?

Oxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach the cells deep inside your body?

Allison Ramsey and Mary Staicu detail the discovery of penicillin and how it transformed medicine.

Why should we stop slouching and have good posture? Your posture is the foundation for every movement your body makes and can determine how well your body adapts to the stresses on it.

Most of us don’t need more than one whiff to identify that generally unpleasant, characteristic smell we call body odor. But it’s a surprisingly complex phenomenon, influenced by our genetic makeup, age, diet, and hygiene. So what is this odor, exactly?

In about half of the human population, yeast in our hair causes dandruff. So, why do some people have more dandruff than others? And how can it be treated?

What is insomnia? And is there any way to break the cycle? Dan Kwartler details the science of insomnia.

Explore the science of why opioids are addictive and what can be done to reverse the growing rates of addiction and overdose.

Your liver is the heaviest organ in your body, which simultaneously acts as a storehouse, a manufacturing hub, and a processing plant. Emma Bryce gives a crash course on the liver and how it helps keep us alive.

Beneath your ribs, you’ll find, among other things, the pancreas -- an organ that works a lot like a personal health coach.

Approximately seven million people around the world die from heart attacks every year. And cardiovascular disease, which causes heart attacks and other problems like strokes, is the world’s leading killer. So what causes a heart attack?

Strokes deprive brain cells of oxygen and are one of the most common causes of death, and a leading cause of preventable disability. But what causes strokes in the first place?

This video explains the science behind concussions. How dangerous is a concussion? The answer is complicated and lies in how the brain responds when something strikes it.

We have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow.

In the United States, it’s estimated that 30 percent of adults and 66 percent of adolescents are regularly sleep-deprived. This isn’t just a minor inconvenience: staying awake can cause serious bodily harm.

Human bodies aren’t built for extreme aging: our capacity is set at about 90 years. But what does aging really mean, and how does it counteract the body’s efforts to stay alive?

What are the evolutionary explanations for the human menstrual cycle? This video adds a unique understanding to human menstruation, pregnancy and women's health.

Fevers have a significant cost for your body: for every degree increase in temperature, there’s a 12.5% increase in energy required. So, why and how does your body produce a fever?

Explore the probability of a future pandemic and the steps we can take to reduce its destructiveness.

This is a video about the development and function of the teen brain. The video treats the teen brain as a computer upgrade. The video was created by TeenMentalHealth.org and is hosted on YouTube.

Leading a more active lifestyle takes time, effort, and determination, but in the end, it's really worth the shot. Here's what will happen to your body when you exercise regularly.