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.

Topics to Explore


Learn More / Page 3

Heart Stents Fail to Alleviate Chest Pain, New Study Finds

A groundbreaking study upends conventional wisdom on heart stents for treating stable angina.

Adult-onset Food Allergies Are More Prevalent Than Previously Believed

Nearly half of all U.S. adults who have food allergies developed at least one of them during adulthood.

Colonoscopies Should Start at 45, Not 50, According to European Study

Although we're told to start getting screened for colorectal cancer at 50, new research suggests we should start earlier.

Skipping Breakfast Associated With Hardened Arteries, Say Heart Specialists

Skipping breakfast might seem innocuous, but a new study finds it associated with atherosclerosis and a wider waistline.

Why Kids Wheeze Even When They Don't Have Asthma

And the good news is that researchers have identified the protein that may be causing the problem.

Slow Walkers May Be at Greater Risk of Heart-related Death, Study Shows

A U.K. study that lasted years and involved thousands of people suggests a link between slow walking and cardiovascular mortality.

Turns Out Type 2 Diabetes Is Reversible, After All

British scientists call for more awareness that diabetes can go into remission through weight loss.

Smartphone App May Help Detect Pancreatic Cancer Early

A new smartphone app may help detect pancreatic cancer and other diseases tied to jaundice.

More Than a Third of U.S. Adults Take Prescription Opioids, Millions Misuse Them

A national survey finds that one-third of Americans used prescription opioid painkillers in 2015, and millions were taking them without prescriptions. What's the reason for this huge number?

To Fight Disease, Should We Treat and Educate Popular People First?

We often lack the resources to treat and educate everyone when combating disease. Moving the 'hubs' of a social network to the front of the line may be most effective.

Cows Have HIV-fighting Power

And that unique ability may propel us closer to an HIV vaccine for humans.

Removing This Invasive Shrub's Flowers Could Help Combat Malaria

Mosquitoes spread deadly malaria, and trimming one specific shrub could make significant headway in battling the disease.

Research Identifies New Genetic Clues for Testicular Cancer Risk

A new study shows that by testing for multiple genetic factors, it's possible to identify those who have a higher-than-normal risk of developing testicular cancer, a disease that often strikes young men.

'Can I Eat This?' App Saves You from Montezuma's Revenge

The CDC has an app to help you make wise food choices while traveling.

Your Hay Fever Could Make You Allergic to Some Fruits

It's called oral allergy syndrome, and it's caused when the immune system freaks out and overreacts to allergens.

'If You Need Anything, Let Me Know': What Not to Say to a Friend With Cancer

We often feel unsure about what to say to a friend with a serious illness, so we fall back on clichés. Here are some better ways to help .

Will There Ever Be a More Comfortable Way to Get a Mammogram?

Many women dread the squishing of their chest during their annual checkup. Is there another way to get the same results in a more breast-friendly way?

Can You Be Allergic to Your City?

If you're moving from one city to another, pack some extra tissues because it's true: Seasonal allergies can flare up when you relocate and are exposed to new allergens.

Doctors Baffled by Rise in U.S. Teen Cancer Rate

Researchers and doctors know some cancers in teens have skyrocketed since 1975. They just don't know why.

Removing Brands From Cigarette Packs Encourages Smokers to Quit

The branding on cigarette boxes steers smokers who pick up the packs. But without it, smokers aren't as keen on taking a drag.

Being a Tattoo Artist Is a Pain in the Neck — Literally

A first-of-its-kind study looks at the physical stresses of being a tattoo artist.

New CDC Quarantine Rules Raise Civil Liberty Concerns

Updated quarantine regulations which would give federal health officials more leeway to detain sick people have some legal and civil rights experts concerned.

Free Knitted Knockers Are a Boon for Breast Cancer Survivors

This is what happens when fearless knitters take on breast cancer one stitch at a time.

Why a Massive Zika Outbreak in the United States Is Unlikely

Sure, the carrier mosquitoes are in the U.S., and so is the disease. But other factors will stave off a widespread incident, experts say.