Flu vaccines are known to be less effective in the elderly. But until now, the mechanisms behind this phenomenon were not well-understood.

This week is National Influenza Vaccination Week. Have you had your flu shot yet?

For patients with cancers of the immune system, such as multiple myeloma, common infections like the flu can be especially dangerous. And new evidence suggests that standard flu shots may not offer adequate protection for these patients.

A new discovery may have given scientists a glimpse into the mechanisms behind Ebola.

Due to recent findings linking antipsychotic medications to poor health and death in dementia patients, some health policymakers have pushed for limited prescribing. But there may be more to the picture.

Dec. 1 is World AIDS Day. And this year's theme is "The Time to Act Is Now."

Newly developed drugs to treat hepatitis C infection can cost upward of $100,000 for a full course of treatment. Do the benefits of these drugs outweigh the costs?

The FDA just approved a first-of-its-kind medication that could cause a blow to one of the leading causes of death in the US.

If you’re looking for some relief from cold and flu symptoms, you can find many treatment options at your local pharmacy. But before you top off your cough syrup with a Tylenol, you may want to think twice.

If you think chewing or dipping tobacco is safer than smoking, you may want to think again.