The APoE4 gene increases the risk of Alzheimer’s disease (AD) and is thought to influence how quickly AD progresses, but a new drug failed to help people with this gene.

For years, it's been thought that colon cancer differed from rectal cancer. After all, they are two different diseases, occurring in two different organs. Right? Recent research has shown that the two diseases may not be different at all.

Psoriasis has been linked to a number of other health problems, including metabolic syndrome (a set of risk factors for heart disease and diabetes). Now, the link between psoriasis and diabetes has become clearer.

Many interventions for autism spectrum disorders (ASD) focus on childhood skills, but as people with ASD move into adulthood, they may continue to need help.

Over the years, diabetes has been linked to numerous health problems. More recent connections have been made between diabetes and cognitive decline. Now, more signs point to a link with Alzheimer's disease.

Growing up is hard to do - especially if you're a girl. While mood swings and emotional highs and lows are all a normal part of adolescence and hormones, major depression shouldn't be.

It all begins with acid reflux. That's when digestive acids flow backwards and cause heartburn. Over time, this condition can lead to more serious conditions, including cancer.

What exactly does ecstasy do to the brain? Everyone has a different answer, but now science provides some clarity.