Two studies suggest that, for certain people, keeping to a moderate physical activity regimen may be best for heart health. One study found that a schedule of intense workouts actually boosted the risk of death from heart attack or stroke in older people with pre-existing heart disease, while the other found that young men who did a lot of endurance exercise were at higher risk for heart rhythm problems later in life.

Getting more fit might reduce the risk of death for elderly men with high blood pressure. Compared to the least-fit men, those who had the highest levels of fitness had nearly half the risk of death. For men in the low-fitness category, the risk of dying was 18 percent lower. And, men in the moderate-fitness category had a 36 percent lower death risk.

Doing yoga may help reduce blood pressure among people with hypertension. There is now a growing number of randomized controlled trials on yoga for a variety of medical conditions. But the quality and expressiveness of these trials varies, thus, it is often difficult to evaluate the real evidence for the usefulness of yoga in a specific condition based on single trials.

Back pain is one of the most common medical problems, affecting almost 80 percent of Americans at some point in their lives. Neurosurgeon Dr. Patrick Roth believes many people are taking the wrong approach to back pain. Dr. Manny Alvarez, senior managing health editor of FoxNews.com recently sat down with Roth, author of “The End of Back Pain.”

A smartphone app that uses voice analysis to detect mood changes in people with bipolar disorder is being tested by researchers. Bipolar disorder is a mental illness that causes extreme emotional highs and lows. It affects millions of people worldwide and can have serious consequences, including suicide. The app showed promise in early tests with a small group of patients.

As the weather warms and summer begins, dozens of camps across the nation will be catering to children and teens with special needs. “Kids, whether they have special needs or not, are kids, and they are helped by summer camp programs,” said W. George Scarlett, deputy chair of the Eliot-Pearson Department of Child Development at Tufts University in Medford, Massachusetts.

Minority children with autism are more likely to have lost critical developmental skills, such as walking or talking, than are white children. The phenomenon, called developmental regression, occurs when children have reached milestones such as saying words and walking, and then those skills suddenly vanish.

Environmental factors are more important than previously thought in leading to autism, as big a factor as genes, according to the largest analysis to date to look at how the brain disorder runs in families. Sven Sandin, who worked on the study said it was prompted "by a very basic question which parents often ask: 'If I have a child with autism, what is the risk my next child will too?'"

Every person covered by Medicare would shell out an additional $3 a month if the government agreed to pay to screen certain current and former smokers for lung cancer, a new study estimates. It would cost Medicare $2 billion a year to follow recent advice to offer these lung scans — and fuel angst about rising health costs that are borne by everyone, not just smokers, the study found.

A yellow dusting of pollen might have you running for cover behind closed windows and doors. Not so fast. An allergist says indoor allergens cause just as much trouble, and they're around year-round. However, a few common misconceptions about indoor allergies could mean you are making things worse for yourself.

The risk of dying in the hospital is more than five times higher for pregnant women with obstructive sleep apnea than for those without the sleep disorder. People with sleep apnea experience repeated, brief interruptions in their breathing during sleep. Sleep apnea is associated with higher rates of serious medical conditions that are the leading causes of pregnancy- and childbirth-related death.

It can feel impossible to do much of anything when you're sneezing and blowing your nose constantly. And if you're one of the roughly 8% of Americans who suffer from seasonal allergies, you might find yourself struggling with those symptoms when attempting outdoor exercise in the spring (when the air begins to fill with pollen) and fall (when the ragweed comes out).

Children who have attention-deficit/hyperactivity disorder are nearly three times more likely to have language problems than kids without ADHD. And those language difficulties can have far-reaching academic consequences, the study found. The study, published online April 21 in Pediatrics, looked at 6- to 8-year-olds with and without ADHD in Australia.

People blog, they don't lbog, and they schmooze, not mshooze. But why is this? Why are human languages so constrained? Can such restrictions unveil the basis of the uniquely human capacity for language? New research shows the brains of individual speakers are sensitive to language universals. Syllables that are frequent across languages are recognized more readily than infrequent syllables.

For young kids who are hard of hearing, the longer they wear a hearing aid, the better their speech and language skills. "Parents get some conflicting information, especially if their kids only have mild hearing loss: should they get hearing aids now or wait until later," said an audiologist. But even kids in the study with only mild hearing loss had significantly improved speaking skills if they wore hearing aids.

Technology and medicine are working together in a smart new way: By putting speech therapy in patients’ pockets. The Name That! smart phone app helps patients with a type of speech disorder called aphasia. The app was developed by AppsLab at the University of Northern Iowa (UNI), which seeks to help professors or faculty develop apps with educational value.