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Diseases and Conditions
Know how to prevent, treat and control the symptoms of various diseases and medical conditions. We explain what's happening in your body when disease strikes, and what you can do to feel better faster.
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We're So Close to Eradicating Polio! Here's Why The Last Few Hurdles Are Tricky
As we approach a 100 percent polio-free world, several significant hurdles remain. We'll have to make some changes to vaccine strategy to succeed.
Viking Toilet Worm Investigation Finds Genetic Clues to Emphysema's Origins
Genetic mutations in ancient Vikings protected them from parasites, but contribute to our modern susceptibility to lung diseases COPD and emphysema.
Two New Studies Find Potential Harmful Effects of E-Cigarettes
Studies presented at the 2016 AAAS meeting find an impact on immune system genes and on the potential for artherosclerosis.
New Study: Chronic Fatigue Syndrome Affects Teens More Than Thought
Children with chronic fatigue syndrome miss more school and face more adverse environments than healthy peers, finds a new UK study.
Now You See Them, Now You Don't: The Trouble With Allergies
The sixth-leading cause of chronic illness in the U.S. remains maddeningly difficult to figure out.
WHO: Zika Outbreak Is a Global Health Emergency
The WHO has declared such an emergency only three times before. And in the U.S., public health authorities are reporting the first sexually transmitted Zika infection.
Is Being 'Civilized' Ruining Your Back?
Some say indigenous people don't have backache the way those in industrialized societies do because of the way they carry themselves. But is that true?
The Year in Poop
If you spent the year on the International Space Station, you could drop about 180 pounds of personal payload. That's just one crazy fact we learned about No. 2 in 2015.
How Whole-Body Cryotherapy Works
Is surrounding yourself with supercooled nitrogen gas a smart move for pain relief or a bunch of pseudoscience?
Why You Should Let a Pigeon Perform Your Mammogram
While pigeons probably won't be donning lab coats anytime soon, they are proving their prowess when it comes to detecting cancer.
How False Positives Work (and What They Could Mean for Your Health)
Depending on the test and other factors, a false positive reading for cancer could be as high as 50 percent. What causes false positives, and what does it mean for the patient?
Turducken of Horror: Cancer in a Tapeworm in a Human
The parasite-host relationship just got a lot more complicated.
What the Heck is Tech Neck? How Millennials Could Be the Wrinkliest Generation
Are turkey necks the next man bun? Turns out smartphone use can increase the wrinkle factor for saggy skin known as "tech neck."
Is it possible to be allergic to water?
The human body requires water to thrive, so how could one possibly be allergic to H2O? Consider the strange case of one teen who broke out in hives after swimming.
Is it possible to be allergic to your own blood?
With blood pumping through your body every second of the day, it seems unthinkable that this life-giving substance could be an allergen. For some people, it's not weird science — it's reality.
Is it possible to make yourself allergic to something?
Allergy symptoms like itchy, watery eyes aren't any fun to deal with. Could you be causing your own pain with certain patterns of behavior?
10 Superstitions About Death
Death is a fact of life. Since the beginning of time humanity has come up with numerous superstitions to come to terms with the dearly departed.
Can a splinter kill you?
How can something so small be such a giant pain? Tweezers can undo most splinter damage but not all: That tiny interloper might be teeming with bacteria.
Can an ulcer kill you?
Living with ulcers often means passing up your favorite spicy foods. But it gets worse — ulcers can form inside your body and on your skin, leading to potentially fatal conditions.
How do diseases jump from infecting animals to infecting humans?
There's such a thing as getting too close to nature. Many diseases that infect animals can make the jump to humans, sometimes with deadly consequences.
Why are highly contagious diseases kept in labs?
It might seem counterintuitive for labs to stock highly contagious diseases, but some researchers insist it's with good reason.
Can you really get a bone infection?
Although it's uncommon, bones can get infected — and it can be pretty serious stuff.
Is the plane that transports Ebola patients completely safe?
Ebola patients transported out of Africa don't fly on regular commercial or private planes; they fly on jets modified and operated according to strict protocol.
Does Ebola affect people who are Rh-negative?
Some people believe being Rh-negative type makes them immune to viruses like Ebola. Let's get to the bottom of this theory.
Is American wheat the cause of gluten sensitivity?
Is the American wheat industry to blame for the gluten-free craze? Don't believe the hype, gluten might not be the problem you think it is.
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