Patti Neighmond

It's long been known that hormonal contraception, like any medicine, carries some risks. But doctors and women have hoped that the newer generations of low-dose contraceptive pills, IUDs and implants eliminated the breast cancer risk of earlier, higher-dose formulations.

Now a big study from Denmark suggests the elevated risk of getting breast cancer — while still very small for women in their teens, 20s and 30s – holds true for these low-dose methods, too.

As the months grow colder and darker, many people find themselves somewhat sadder and even depressed.

Bright light is sometimes used to help treat the symptoms of seasonal affective disorder, or SAD. Researchers are now testing light therapy to see if it also can help treat depression that's part of bipolar disorder.

A study published Tuesday in the journal Clinical Psychological Science finds that increased time spent with popular electronic devices — whether a computer, cell phone or tablet — might have contributed to an uptick in symptoms of depression and suicidal thoughts over the last several years among teens, especially among girls.

For most people, buying a "fragrance-free" or "hypoallergenic" moisturizer that turns out to be neither might be frustrating, but not harmful. But for people with sensitive skin or conditions like eczema or psoriasis, it can be a big problem.

"I will start to itch and I have to get it off my body right away," says 62-year-old Kathryn Walter, who lives in Ann Arbor, Mich.

Walter has a severe case of eczema and chooses moisturizers that claim to be free of fragrance and allergy-causing additives. But more often than not, Walter ends up with a product that clearly isn't.

Count the number of hours you sit each day. Be honest.

"If you commute an hour in the morning and hour after work — that's two hours, and if you sit at an eight-hour-a-day desk job that's 10," says epidemiologist Loretta DiPietro of the Milken Institute School of Public Health at George Washington University.

"Then you come home at, say, 6 p.m., eat dinner and crash into your recliner for another three to four hours," says DiPietro. "That's 13 to 14 hours of sitting."

Walk down the aisle of your local pharmacy or grocery store and you'll be bombarded by a dizzying array of bleaching products, from gels and strips to paint-on bleach.

Many more boys are diagnosed with autism every year than girls. According to the Centers for Disease Control and Prevention, the disorder is 4.5 times more common among boys than girls. Boys appear to be more vulnerable to the disorder, but there is some evidence that the gender gap may not be as wide as it appears.

For more than a decade, the number of women choosing bilateral mastectomy to treat breast cancer has been on the rise. That's the case even for women with early stage breast cancer, cancer in only one breast or non-invasive breast cancer, which has raised concerns that women are getting more surgery than they need. Now a study suggests that trend may be turning around.

Sleek, high-tech wristbands are extremely popular these days, promising to measure heart rate, steps taken during the day, sleep, calories burned and even stress.

This is a story about conflicting medical advice.

One group of doctors, represented by the American College of Obstetricians and Gynecologists, recommends yearly pelvic exams for all women 21 years of age and older, whether they have symptoms of disease or not.

When 18-year-old Hannah Vanderkooy feels extremely tired or anxious, she heads to a spacelike capsule for a nap — during school. Like many teens struggling to get good grades and maybe even a college scholarship, Vanderkooy doesn't get enough sleep.

And she's not alone. Various studies indicate that chronically sleepy and stressed-out teenagers might be the new normal among U.S. adolescents who are competing for grades, colleges and, eventually, jobs.

"Yo-yo dieting" — where people lose weight and gain it back again — doubles the risk of a heart attack, stroke or death in people who already have significant heart disease.

That's the conclusion of an international study published recently in the New England Journal of Medicine.

Four out of five older Americans with hearing loss just ignore it, in part because a hearing aid is an unwelcome sign of aging. But what if hearing aids looked like stylish fashion accessories and could be bought at your local pharmacy like reading glasses?

That's the vision of Kristen "KR" Liu, who's the director of accessibility and advocacy for Doppler Labs, a company marketing one of these devices. She thinks a hearing aid could be "something that's hip and cool and people have multiple pairs and it's fashionable."

One of the most common reasons people go to the doctor is lower back pain, and one of the most common reasons doctors prescribe powerful, addictive narcotics is lower back pain.

Now, research published Tuesday in the Journal of the American Medical Association offers the latest evidence that spinal manipulation can offer a modestly effective alternative.

New research published Monday adds fuel to an ongoing debate in the public health community over whether a few extra pounds are good, or bad, for you.

Earlier research found that being somewhat overweight, but not obese, may result in a longer life.

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