High-salt diets typically ring alarm bells because of their association with heart disease. A new study shows that salt intake may affect some patients' neurological health, too.

Prescriptions for opioid painkillers have nearly doubled over the past decade. At the same time, opioid overdose deaths have risen. Could the availability of alternative pain treatments, such as medical marijuana, change those overdose rates?

The most common form of arthritis can cause major disability in patients who are 50 or older in the United States. A new study showed just how common it was among those living in urban areas.

Some viruses and bacteria travel through the air. Others travel in bugs and ticks — but how many of these reach children?

Insomnia doesn't just affect patients at night — they often feel tired and less focused during the day, too. But patients may also experience back pain as a result of their sleepless nights.

Alzheimer's disease is often thought of as a part of aging, but it may not have to be. New research suggests a certain vitamin may help prevent the disease.

Alcohol has established medical links to liver damage, heart trouble and other conditions. But it could also eventually play a part in memory loss.

Pacemakers are a time-tested and effective way to safely adjust irregular heart rate with a small medical implant. But the devices do come with risks and benefits that must be carefully considered.

Many older Americans deal with more than one serious medical condition at a time. New research looked at how having more than one chronic disease affected average life expectancy.

Some in the medical community have zeroed in on B vitamins as having the potential to reduce Alzheimer’s risk. But recent research suggested this hypothesis wasn't true.