This is a very interesting video from Dr Mercola, about why people are succumbed by heart attacks. It is not what you always believed. Also there is a youtube video using dogs to explain this reasoning. If you can get above the idea of cruelty to animals, this video will offer an even more in depth explanation. http://www.youtube.com/watch?v=8xOPZjAddI4 To top off this medical information clip, click this link... SIDE EFFECTS OF TRUTH - http://www.motherjones.com/news/feature/2005/05/david_graham.html