Diseases may occur at the same time but may not be directly related. Understanding the relationship between obesity, asthma and sleep-disordered breathing ( SDB ) could lead to better treatment and improved quality of life.

While all there are many unknown contributing factors that go into the development of autism spectrum disorders, research is starting to show that there are concrete differences in brain structure between autistic children and their unaffected peers.

When do mental illnesses start to display symptoms? A recent study shed light on the prevalence of psychiatric disorders in children, and the differences between the United States and another country.

While the prevalence of a number of cancers is declining, some types are on the rise. The incidence of one of the more difficult forms of liver cancer to treat has tripled over the past 30 years. And researchers are beginning to know why.

The drug Ambien has established effectiveness at helping insomniacs, people who spend their nights trying to somehow charm their own body into giving up wakefulness. A new study finds that patients with primary insomnia are unlikely to escalate their dose.

Older people may gain brain benefits from high levels of omega-3 fatty acids or vitamins B, C, D and E. High levels of trans-fats may mean worse mental abilities and more brain shrinkage.

Attention deficit hyperactivity disorder (ADHD) causes kids who suffer from it to have difficulty focusing and controlling their impulses, which makes it difficult to do well in school and sometimes to get along socially.