Halloween Safety Tips for Kids With Food Allergies

THURSDAY, Oct. 31 (HealthDay News) -- Halloween activities, such as parties and trick-or-treating, could be dangerous for children with food allergies, a medical expert warns.

Health Tip: When Baby Confuses Days With Nights

(HealthDay News) -- Some newborns appear to have their days and nights mixed up -- sleeping mostly during the day and being more alert at night.

Health Tip: Prepare for Your Child's First Dental Visit

(HealthDay News) -- Baby's first dental visit is very important, even if there is only one tooth.

Wag the Dog? Pooches Pay Heed to Tails' Direction

THURSDAY, Oct. 31 (HealthDay News) -- A dog can tell when another pooch is wagging its tail to the left or right and responds differently when the wag goes one way or the other, a new study shows.

Early Stem Cell Transplant May Benefit Some Non-Hodgkin's Lymphoma Patients

THURSDAY, Oct. 31 (HealthDay News) -- Early stem cell transplants do not improve overall survival in high-risk patients with aggressive non-Hodgkin's lymphoma, but may be beneficial for a small group of patients with the very highest risk, according to a new study.

Babies Work Specific Brain Areas to Imitate People

THURSDAY, Oct. 31 (HealthDay News) -- Babies imitate other people to learn how to do things, and now researchers say they've pinpointed just how infants' brains work during that process.

HIV Resistance Mapped by Gene Researchers

THURSDAY, Oct. 31 (HealthDay News) -- Researchers who created the first map of human resistance to HIV say their achievement could lead to improved treatments for the virus, which causes AIDS.

One in 10 Teens Has Misused Prescription Painkillers: Survey

THURSDAY, Oct. 31 (HealthDay News) -- About one in 10 American teens and young adults says they have misused a prescription painkiller or sedative, a new study finds.

Closing Chinese Poultry Markets Stalled Bird Flu's Spread to People

WEDNESDAY, Oct. 30 (HealthDay News) -- Closing live poultry markets quickly and substantially reduced bird-to-human transmission of the deadly H7N9 bird flu virus in China, according to a new study.

Health Highlights: Oct. 31, 2013

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

Some Women Cite Personal Growth After Breast Cancer Diagnosis

THURSDAY, Oct. 31 (HealthDay News) -- Although a breast cancer diagnosis can be devastating news, some women say they also go through positive personal growth from the experience, a new study finds.

Can Marathons Temporarily Hurt the Heart?

THURSDAY, Oct. 31 (HealthDay News) -- The thousands of runners who will take part in the New York City Marathon on Sunday most likely believe they are strengthening their cardiovascular system by participating. But new research suggests the strain of a 26.2 mile-run can temporarily damage heart muscle.