What is a sacred heart medical diet?

I was wondering what a sacred heart medical diet is cause I keep hearing of it and I dont know what it is so can anyone tell me?

The Sacred Heart Diet is a fad diet that has been circulating for many years. The diet was supposedly thought to come from the cardiology department at Sacred Heart Memorial Hospital where it was used for overweight heart patients.

Basically its a 7 day diet, where it can be used for rapid weight loss..

google it for more info