Ten years ago, researchers stumbled onto a striking finding: Women who believed that they were prone to heart disease were nearly four times as likely to die as women with similar risk factors who didn't hold such fatalistic views.

The higher risk of death, in other words, had nothing to with the usual heart disease culprits -- age, blood pressure, cholesterol, weight. Instead, it tracked closely with belief. Think sick, be sick.

"The biggest difference between naturopathy and allopathy is that the allopathy physician tends to view good health as a physical state in which there is no obvious disease present. In contrast, naturopathic physicians recognize true health as an optimal state of physical, mental, emotional, and spiritual well-being. The key differences between a naturopathic and an allopathic physician are apparent if we look at how each doctor views both health and disease."

What are the forces shaping who we are, how we live, and how we act? Are we shaped primarily by our environment, or by our genes? These very old questions form the basis of the "nature-nurture" debate. Increasingly, we are told that research has confirmed the importance of genetic factors influencing psychiatric disorders, personality, intelligence, sexual orientation, criminality, and so on.

Smoking marijuana can cause a person to acquire brain damage to the point of retardation...

There is a causal relationship between cannabis use and schizophrenia (psychotic disorders).

As an organic chemist with a major pharmaceutical company, Dr David Hamilton was on a good salary, developing a new generation of drugs by synthesising molecules found in nature. But Dr Hamilton was never convinced that man could improve on nature, and instead was becoming more and more fascinated by the potential healing power of the mind. So, inspired by his body’s ability to withstand heat during fire-walking, he began a quest to investigate the mysteries of the mind-body connection.