Spacing Between Sibling Births Tied to Autism Risk in Study

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Children conceived either less than one year or more than five years after the birth of a sibling could be at increased risk for autism, a new study suggests.

Head Injuries May Raise Chances of Risky Behavior by Teens

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Teenagers who have experienced a traumatic brain injury are much more likely to engage in a wide range of risky behaviors, Canadian researchers report.

Social Support May Be Key to Heart Attack Recovery

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Young and middle-aged heart attack survivors are more likely to have poor health and low quality of life if they have fewer family and friends to support them in their recovery, a new study suggests.

Could a 'Fat Tongue' Be a Factor in Sleep Apnea?

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Sleep apnea is a potential health risk for millions of Americans, and a new study points to a possible culprit behind the disorder: a "fat" tongue.

Acupuncture May Not Help Chronic Knee Pain, Study Finds

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Acupuncture doesn't improve knee pain any more than "sham" acupuncture, according to a new study.

Obesity Tied to Higher Cancer Risk for Colon Cancer Survivors

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Colon cancer patients who are overweight or obese when diagnosed appear to face a slightly higher risk for developing a second weight-related cancer, new research suggests.

Groups Call for Medicare Coverage of Lung Cancer Screening

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Medicare should cover low-dose computed tomography lung cancer screening for people at high risk for the disease, a coalition of more than 60 patient and medical groups says.

Recessions May Thwart a Woman's Motherhood Plans Forever: Study

TUESDAY, Sept. 30, 2014 (HealthDay News) -- When unemployment rates climb, women tend to put the brakes on motherhood. And for many young women, that decision may turn out to be a permanent choice, new research suggests.

When It Comes to Sex Partners, Men Prefer Younger Women: Study

TUESDAY, Sept. 30, 2014 (HealthDay News) -- In books and movies, plots involving older men chasing much younger women abound.

Can Exercise Prevent Type 2 Diabetes? Your Genes May Be Key

TUESDAY, Sept. 30, 2014 (HealthDay News) -- For millions of overweight Americans, regular exercise remains a prime weapon against excess weight and the threat of type 2 diabetes.

Fish Oil Supplements Have Little Effect on Irregular Heartbeat: Study

TUESDAY, Sept. 30, 2014 (HealthDay News) -- High doses of fish oil supplements won't prevent the return of a common type of irregular heartbeat known as atrial fibrillation, Canadian researchers report.

Herceptin Best for Certain Breast Cancer Patients, Study Says

TUESDAY, Sept. 30, 2014 (HealthDay News) -- Herceptin is the best drug treatment for a type of breast cancer called HER2-positive and should remain the standard of care for that type of tumor, according to new findings from a long-term clinical trial.

Health Highlights: Sept. 30, 2014

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

Health Tip: Curbing Nighttime Nursing

(HealthDay News) -- Older babies may be able to sleep through the night, but may still wake up to nurse.

Health Tip: Get Physical Activity

(HealthDay News) -- Hitting the gym or going for a run are great ways to exercise, but there are lots of other ways to burn calories.