Can Mass Killings Be Contagious?
Study examines data on mass killings.
Study Reveals Possible Link Between Eye Color and Alcoholism Risk
Is there a link between blue eyes and the risk of alcoholism?
Washington Woman's Measles Death Is First in US Since 2003
Woman's death by measles in Washington state is first in the US since 2003
Amnesiac Woman Tries to Solve Mystery of Who She Is
A woman called "Sam" is searching for her family as she battles cancer.
Study Investigates Possible Link Between Citrus and Skin Cancer
Experts say it's too early to tell people to avoid fruit.
Officials Confirm Ebola's Return to Liberia
Ebola killed 4,806 people in Liberia since the outbreak started last year.
How to Watch Out for 'Flesh-Eating' Bacteria This Summer
Multiple kinds of bacteria can cause this dangerous condition.
CDC Warns of Pool Parasite This Summer
Parasite can survive in chlorine for days.
Girl Learning to Eat After Spending Her Life on Feeding Tube
Brielle Trice has had a feeding tube since she was an infant.
How a Woman Lost Sight in One Eye 12 Hours After Mud Run
Brittany Williams is hoping a cornea transplant will help her.
This Pint-Sized Supporter Is Thrilled About a Vaccine Bill
Rhett Krawitt, 7, asked people to vaccinate after surviving leukemia.
The Drug at the Center of the Supreme Court Case on Lethal Injections
Why a lawsuit wants to outlaw the use of midazolam in lethal injections.
Synchronized Swimmers Show Perils of 'Drinking and Diving'
The Swedish synchronized team wanted to warn against swimming while drunk.
Swimmers Beware: Burning Eyes May Be Caused by Urine
Chlorine by-product can irritate swimmers.
Lamb Modified With Jellyfish DNA Goes on Market, Prompts Investigation
The lamb was being used for a study on heart disease.
Why Beachgoers Are Being Warned to Avoid Gulf Waters
Multiple Texas beaches have high levels of bacteria.
Why A Human Head Transplant Probably Isn't Happening Any Time Soon
An Italian surgeon says he wants to perform a transplant in the next few years.
How Diabetics Handle Fasting for Ramadan
The holy month for Muslims starts this week.
Two Transplants as a Child, Ready to Become Transplant Nurse
Laura Lukianov was one of the first people in the U.S. to have a living donor.
LA Deputy Saves Life of Colleague By Becoming Liver Donor
Deputy Jorge Castro had liver failure due to PSC.
Mutation Discovered in Cannibal Tribe Might Stop Deadly Brain Disease
A tribe in Papa New Guinea had protections from degenerative brain disease.
Boy Transforms Into Superhero Thanks to Special Armor
Arlo Jordan becomes a crimefighter named Raleighman.
CDC Issues Health Advisory Amid MERS Outbreak
The deadly virus has infected at least 122 people in South Korea.
Synthetic Marijuana-Related Calls to Poison Control Centers Spike 229%
The CDC reported 3,572 calls since the start of this year.
Missouri Family Mourns Teen Athlete Who Collapsed at Pool
Emma Aronson, 17, died after swimming laps with friends.
See the Entire Wedding Party That Donned Masks Amid MERS
A wedding party donned medical masks for a group picture.
What You Need to Know About Extensively Drug-Resistant Tuberculosis
Why extensively drug-resistant tuberculosis worries health experts.
Formerly Conjoined Twin Leaves Hospital a Month After Sister
Knatalye and Adeline Mata were separated in a high-stakes surgery in February.
FDA Panel Votes to Approve 'Female Viagra' With Conditions
There are no drugs on the market today to treat sexual dysfunction for women.
Pediatric Cancer Patients Get to Celebrate Very Special Prom
Patients got their own makeup artists and prom gear for the event.
6 Things You Should Know About Sex During Pregnancy
Everything you wanted to ask about sex during pregnancy.
What You Need to Know About Anthrax
The Pentagon inadvertently shipped live anthrax to nine labs.
Beware the Risks of Grill Brush Bristles in Your Burger
Tiny piece of metal hidden in burger lands Connecticut woman in the hospital.
Mom Shares Heartwarming Pic as Daughter Battles Cancer With Friend
Maliyah Jones is battling cancer at age 5.
Teen's Brain Aneurysm Draws Attention to Rare Condition
Another baseball player died after being hit, but an aneurysm was not confirmed.
How to Stay Safe on Memorial Day
What to keep in mind to stay safe this summer.
How This Bird Flu Is Different From Past Outbreaks
The viral outbreak has been spotted in birds in 20 states.
Salmonella Outbreak Possibly Linked to Tuna Sushi
Rare strain of salmonella sickens 53 people in nine states.
Mom Jailed Over Son's Circumcision Dispute Agrees to Procedure
Heather Hironimus spent a week in jail.
'Dead' Man Starts Moving on His Way to Morgue
Firefighters declared the man dead, but he started breathing later.
Turning 18 and Turning to Breast Reduction Surgery
Before her surgery, Mackenzie Langan's bra size was a 32-H.
Paralyzed Man Drinks Beer by Moving Robotic Arm With His Mind
Erik Sorto hasn't moved his arms or legs in more than 10 years.
You'll Need Tissues After Seeing This PSA for Organ Donation
Argentinian PSA shines light on organ donation.
Alleged Blue Bell Listeria Victim Says Illness Changed His Life Forever
It started with a brutal headache, and soon David Shockley was unresponsive.
Man With Dementia Survives Nearly 3 Days in Desert
Rolland Towne was rescued and evacuated by helicopter.
Parents Say Pot Helped Daughter's Seizures
Three-year-old had 1,000 seizures a day. Now, she only has a handful, mom says.
Bride-to-Be Says Birth Control Caused Stroke
Jordan Ward, 26, says her fiance convinced her to go to the hospital.
Dr. Besser's Look at Life Inside the Hot Zone
Dr. Richard Besser reports on the growing outbreak from Monrovia, Liberia.
Cancer Lessons I Learned From a Fictional Teenage Boy
That love scene from "The Fault in Our Stars" is so intense.
Watch: Possible Citrus-Skin Cancer Link Subject of New Study
The new study published in the Journal of Clinical Oncology examines if eating citrus may put people at greater risk for...