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.
Alpha-gal Syndrome: The Meat Allergy Caused by a Tick
Get Ready for Longer, More Intense Pollen Seasons
Can Pollen Allergies Make You Tired?
People With Asthma, Hay Fever May Have Higher Risk of Psychiatric Disorders
First New Asthma Pill in 20 Years Could Replace Inhalers
Can you get arthritis from cracking your knuckles?
Who can help treat my arthritis?
What does arthritis do to my joints?
Do You Need to Have a Positive Attitude to Beat Cancer?
8 Thoughtful Ways to Help a Loved One Going Through Chemo
What's the Difference Between a Neoplasm and a Tumor?
What's the Difference Between Cardiac Arrest and a Heart Attack?
How the Graphene Blood Pressure Tattoo Will Change Monitoring
Cyanosis: Why Your Fingers Turn Blue
How Can I Tell Whether I Have Flu or COVID-19?
The 1918 Spanish Flu Killed Millions — and Experts Fear It Could Happen Again
Can the Change in Temperature Really Make You Sick?
First Migraine-specific Drugs Show Promise in Studies
10 Tips for How to Relieve Sinus Pressure
4 Occupations Prone to Sinus Trouble
How Many People Could Use the Same Kidney?
Why Diabulimia Is So Dangerous
Turns Out Type 2 Diabetes Is Reversible, After All
New Study: Chronic Fatigue Syndrome Affects Teens More Than Thought
The Mauve Factor
Osteoporosis Diagnosis and Risk Factors
Osteoporosis Questions and Answers
How to Cure A UTI Naturally
What Is a Low FODMAP Diet and Who Should Try It?
The Curse of Brewing Beer in Your Own Belly
Is the BRAT Diet Still Beneficial?
Why Your Baby Could Be Giving You Mommy Thumb
More Than a Third of U.S. Adults Take Prescription Opioids, Millions Misuse Them
How Whole-Body Cryotherapy Works
Is Polio Back? Here's What You Need to Know
Can Viruses Make You Smell More Attractive to Mosquitoes?
6 Questions Answered About COVID-19 'Stealth' Variant BA.2
No Joke: Dead Butt Syndrome Is a Real Pain
Being a Tattoo Artist Is a Pain in the Neck — Literally
Daily Coffee May Lower Risk of Both Liver Disease and Multiple Sclerosis
Monkeypox Is a Global Health Emergency, But Don't Panic Yet
Nematodes: Do We Still Need to Worry About Roundworms and Bare Feet?
Scurvy: The Scourge of the High Seas Remains at Large Today
T-cells Are Superheroes in the Battle Against Omicron
20 Years Later, 9/11 Survivors Are Still Experiencing Fallout from Toxic Dust
Masks Are Back and 'War on COVID-19 Has Changed,' CDC Says
Do People Really Die of Old Age?
The Sarco Suicide Pod: Controversial or Compassionate?
Telling Doctors Not to Resuscitate, by Tattoo
We often use the terms heart attack and cardiac arrest interchangeably. But these are two different conditions. How can you tell one from the other?
Continuous monitoring of blood pressure instead of the static, one-time reading provided by a cuff is a medical holy grail and scientists have, for the first time, come up with a graphene tattoo that will provide it.
The director-general of the World Health Organization declared monkeypox a public health emergency of international concern July 23, 2022. So, what exactly does that mean?
Viruses can alter a person's body odor to make it more attractive to mosquitoes, leading to more bites, which, in turn, allow a virus to spread.
By Penghua Wang
One bite from a lone star tick might have you eating veggie burgers for life.
Friends often tell cancer patients to "stay positive" in order to beat the disease. But is there any scientific proof that positivity helps with cancer survival? And can positivity have a dark side?
By Alia Hoyt
What is the new COVID-19 variant BA.2, and will it cause another wave of infections in the U.S.? Two immunologists from the University of South Carolina weigh in.
According to scientists, T-cells have been steadily changing the pandemic picture and are one reason for optimism that the pandemic may soon be behind us.
By Luke O'Neill
If a friend or relative is undergoing chemotherapy, you want to help them but may not be sure of the best way to do so. Here are eight great ideas that almost any patient will appreciate.
By Alia Hoyt
Because it has far more mutations than the delta variant does, the new omicron variant may be much more contagious. An expert on emerging viruses explains.
Who gets long COVID and why still remains a mystery, but several new studies are showing it's much more widespread than we initially thought. So what is long COVID and how can it be treated?
The World Trade Center dust consisted of a dangerous mixture of particles, asbestos and a class of chemicals called persistent organic pollutants, and it's still causing health problems for survivors.
We hear many reports of people vaccinated against COVID-19 getting the disease. How does that happen — and why should that not stop us from getting the vaccine?
By Alia Hoyt
New data released today from the U.S. Centers for Disease Control and Prevention is behind the agency's updated mask guidelines. What so alarmed the CDC that it's telling even the vaccinated to wear masks again?
What in the world is monkeypox, and should Americans be worried about another contagious virus spreading across the U.S. and Europe?
The wildly contagious delta coronavirus variant now accounts for more than 80 percent of cases in the United States. Does it pose a threat to eliminating COVID-19 across the globe?
It's been a year since the World Health Organization officially declared the novel coronavirus a global pandemic. The last 12 months have been truly historic and life-changing in ways that we may not even yet recognize.
By John Donovan
You've probably heard of a tumor, but what about a neoplasm? How similar are they and are they always cancerous?