Trusted Harvard Medical School experts put today's health news stories in perspective and explain how issues affect you.

More Details in Long-Term Hormone Study

Breast Cancer Drug Approved as 1st Treatment

Vaccine Refusals Tied to Pertussis Outbreak

E-Cigarettes May Aid Quit-Smoking Efforts

Study: Fish Oil Won't Save Your Brain

Study Finds Marriage Boosts Cancer Survival

Costs in Year after Heart Attack Rise

Breastfeeding Concerns Linked to Quitting

Study: Statins May Increase Cataract Risk

Studies: Colon Cancer Screening Saves Lives

Study: 2 Programs Equal for Substance Abuse

CDC Sounds Alarm on Antibiotic Resistance

Teen Weight Levels Off, Habits Improve

Predicting Diabetes Reversal after Surgery

'Male Menopause' Not as Simple as 'Low T'

Positive People Move More, Live Longer

Study Finds No Birth Problems after Drinking

Teen E-Cigarette Use Rises Rapidly

Sleepy Shoppers Haul Home More Calories

Angioplasty Faster, but Death Rates Stable

Report: Thousands of Deaths From Heart Attacks and Strokes Are Preventable

Pediatrician Group Urges Early Flu Vaccine for Children

Obese but Healthy: Understanding the Exceptions

Migraines Linked to Changes in Brain

Device Resets Rhythm without Touching Heart

Study: 2 Tests Find Ovarian Cancers Early

Most Drugs Are Safe During Breastfeeding

Super-Early Drug Therapy Reduces Stroke Disability

Study Tracks Early Symptoms of Traumatic Brain Disease

CDC: 300,000 Treated for Lyme Each Year

Research Predicts Dementia Risk for Diabetics

Hospital Tests, Procedures You Don't Need

Brief Pre-Surgery Blood Cutoff May Aid Heart

Drug Cuts Prostate Cancers; Deaths Unchanged

Immune System Eyed as Cause of Alzheimer's

Healthy Diet May Protect Diabetics' Kidneys

Kids' Belly Pain Linked to Mental Health Risk

Dr. Gupta Backs Medical Marijuana

Higher Blood Sugar May Raise Dementia Risk

Most Reject Idea of 120-Year Life Span

Metformin Linked to Prostate Cancer Survival

Teen Smokeless Tobacco Users Smoke, Too

Report: Tattoo Can Obscure Melanoma

Anemia Linked with Higher Dementia Risk

Heart Doctors Urged to Talk about Sex

Study Links Autism, ADHD to Game Addiction

Latest Alzheimer's Drug Fails

Statin Drugs May Reduce Risk of Parkinson's Disease

Study: HPV Vaccine May Prevent Throat Cancer

Tipping TVs Still a Danger

Artificial Sweeteners: Bad for Your Health?

Study: Lung CT Best for Highest-Risk Group

Study: Aspirin Cuts Colon Cancer Long-Term

Kids' TV Watching Reflects Parents' Habits

Study Links Omega-3s, Prostate Cancer Risk

Since Vaccine, Pneumonia Admissions Drop

Long-Term Benefit of ADHD Drugs Questioned

West Nile: What's Next after a Big Year?

Heinz Kerry in Hospital after Possible Seizure

Report: Millions Infected in Europe's Hospitals

Home-Test Program Helps Cut Blood Pressure

Study: Eliquis OK for Clots in Veins

ATV Injuries Involving Children Drop

Brain Stimulation May Aid Stroke Recovery

PTSD Linked with Higher Heart Disease Risk

2 Drugs May Cut Strokes in High-Risk Group

Study: Weight Loss Doesn't Cut Heart Risk for Diabetics

Study: Kids' Doctors Can Help Parents Quit

Better Drug Use Could Bring Huge Savings

More Evidence That Colonoscopy Saves Lives

In Stroke Treatment, 15 Minutes Matters

Red-Meat Increase May Raise Diabetes Risk

Study: Sibling Bullying Causes Damage, Too

Can Brain Scans Pick Depression Treatment?

Tests May Help Predict COPD Flare-Ups

Study Links Low Blood Sugar with Dementia

Slower Recovery for Kids' 2nd Concussion

Experts Urge Looser Rules for Avandia

Odd Rhythm Linked to Earlier Memory Issues

Surgery Aids Moderately Obese Diabetics

Actor Spotlights HPV Link to Throat Cancer

Prescription Drug Poisonings Up in Children

Study Tallies Heart Risk from Pain Relievers

Study: Few Flights Diverted for Medical Crises

Do Patients Prefer Costlier Care?

Study: Statins May Decrease Exercise Effects

Some Types of Pain Linked with Suicide Risk

Stroke Care Costs Projected to Double

Better Sunscreen Labels Still May Mislead

CDC: 1 in 5 Kids Has a Mental Disorder

Depression Raises Midlife Women's Stroke Risk

Pelvic Surgery Failure Increases with Time

Processed, Restaurant Foods Still High-Sodium

Doctors Urged to Screen for Alcohol Problems

Survey: Many Teens Text While Driving

13% of Seniors Feel More Confused, Forgetful

Study Finds No Benefit from Fish Oil Pills

Christie Gets Surgery to Aid Weight Loss

Seeking a Better Way to Fight Eye Disease

Most Parents Report Distracted Driving

Study: No Z-Pak Heart Risk for Most Adults

Not Calling 911 Slows Stroke Treatment

Survey: Most Don't Plan for Long-Term Care

Surgery Lag Harms Young with Breast Cancer

Beta-Blockers May Trim Deaths after Surgery

Some Alternatives May Cut Blood Pressure

Kids Get Warts at Home, Study Finds

Physical Work May Raise Heart, Stroke Risk

Western Diets Linked with Less-Healthy Aging

Faster Resting Heart Risky Even for the Fit

Exercise Slows Physical Decline of Alzheimer's

Social Networks Linked to Vaccine Decisions

Antibiotic Prescriptions Add Up to Overuse

Study: Brain Scans Can 'See' Pain

Less Salt, More Potassium Cut Stroke Risk

Doctors Get Guidance on Discussing PSA Test

Study: Kids Take, Eat More with Big Plates

Walk or Run? Energy Use Is What Counts

Dementia Costs Exceed Heart Disease, Cancer

Study: Teen Habits Put Hearts at Risk

Disease Label Increases Interest in Medicine

Focus on the Food

Novel Drug Tested Against Hepatitis C

Chelation Therapy Shows Limited Benefit for Heart Disease

Breath Test for Heart Failure?

Babies Starting Solid Food Too Early

Physician Group Discourages Elective C-sections

Gulf War Illness Linked To Brain Changes

Less Frequent Mammograms for Older Women?

Survey: More Parents Oppose HPV Vaccine

Online Tracking Helps Lower Blood Pressure