SICK looks at how diseases work inside our body. We talk to top doctors and researchers to uncover the mysteries of viruses, bacteria, fungi and our own immune system.

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SICK looks at how diseases work inside our body.

SICK

Health

Take a closer look at the medical news and discoveries impacting our health and wellbeing.

Health News, Headlines and Videos

The measles virus has been around for thousands of years and has been responsible for the deaths of millions of people.

Here's What Makes Measles So Dangerous

SICK is a new series that looks at how diseases actually work inside our body.

What Happens When a Human Gets Rabies?

What Makes Malaria So Hard to Fight?

Medicine

How Does Leprosy Damage The Human Body?

How Narcolepsy Messes With Your Brain

What Causes Food Allergies?

This Is How HPV Causes Cancer

What Does Altitude Sickness Do to the Human Brain?

What Really Causes a Migraine?

Here's Why Pneumonia Is Still So Deadly

How Osteoporosis Affects Your Bones

How Typhoid Can Tear Holes In Your Organs

How Do Moles Become Cancerous?

How Does Polio Cause Paralysis?

What Happens When Someone Gets Dengue Fever?

How Does Glaucoma Cause Vision Loss?

Will We Ever Cure Breast Cancer?

What Causes Sickle Cell...and How Are We Treating It?

SICK_S03_EP00_SICKLE_CELL_YT

What Does Alzheimer’s Do To the Human Brain?

This Drug-Resistant Bacteria Could Be Hiding In Your Armpits Right Now

Bacteria & Viruses

<p>Learn about new discoveries in the microscopic world of viruses and bacteria.</p>


Health Sciences: Bacteria and Viruses

Why Does the Flu Come Back Every Year?

Flesh-Eating Bacteria Is Real and This Is How It Works

Flesh-eating bacteria is real — here's how it works 

What Strep Throat and Flesh-Eating Bacteria Have in Common

What Causes a Heart Attack?

What Happens When a Virus Hijacks Your Heart?

Myocarditis occurs when viruses that normally infect other parts of the body end up infecting the heart—but what happens then?

The Future Looks Bright for Patients with HIV, Here's Why

Why the Second Worst Ebola Outbreak May Soon Be Over

COVID-19

<p>Stay up to date on the latest information surrounding the novel coronavirus.</p>


Health Sciences: Coronavirus (COVID-19) Updates

We sat down with Dr. Timothy Brewer, a professor of medicine and epidemiology at UCLA, and Dr. Larry Lutwick, a professor of Medicine at the Mayo Clinic School of Medicine and Sciences, to find out how COVID-19 attacks our bodies and why it’s so hard to track and control.

Why COVID-19 Is So Hard To Track

We sat down with two professors of medicine to find out how COVID-19 attacks our bodies and why it’s so hard to track and control

This drug-resistant superbug is invading healthcare systems worldwide — and you've probably never heard of it.

Meet Candida Auris, the Superbug That’s Taking Over the World

DRUG-RESISTANT SUPERBUG: This drug-resistant superbug is invading healthcare systems worldwide — and you've probably never heard of it

There have been seven cholera pandemics in the last 200 years — here’s why this ancient disease still plagues us today.

The Pandemic the World Has Forgotten

CENTURIES-LONG PANDEMIC: There have been seven cholera pandemics in the last 200 years — here’s why this ancient disease still plagues us today 

A coronavirus vaccine is only the first step toward achieving herd immunity and ultimately ending the pandemic — these are some of the other obstacles we must overcome.

What We Need to End the Coronavirus Pandemic

A coronavirus vaccine is only the first step toward achieving herd immunity and ultimately ending the pandemic — these are some of the other obstacles we must overcome 

The common cold is the most common human disease in the world — here's why we haven't found a cure yet.

Why Isn’t There a Cure For the Common Cold?

The common cold is the most common human disease in the world — here's why we haven't found a cure yet 

The bubonic plague isn't a disease of the past — it still exists today, and here's why.

Why the Bubonic Plague Still Exists Today

The bubonic plague isn't a disease of the past — it still exists today, and here's why