I guess you can float this kind of post over at nonewnormal without anyone taking more than a cursory glance at it, but..

"Doctor Leonard Coldwell" is not a doctor. He isn't even a Leonard Coldwell.

His real name is Bernd Klein and he was once a motivational speaker. At some point he went to the USA and called himself Dr. Coldwell.

His hobby is the “Instinct Based Medicine System” (IBMS). The method says that the main cause of illness is mental and emotional stress.

"IBMS" is sold in the same aisle as "faith healing."

Every cancer, he claims, can therefore be cured in a few weeks. The supposed recipe for success: positive thinking is healthy. Stress makes you sick.

The guy is fraud and a bigger quack than Doctor Nick from the Simpsons.