Is Intense Pain in the Jaw Line Really a Warning Sign of Heart Attack?

Question by Jifri: Is intense pain in the jaw line really a warning sign of heart attack?
I just received an email, Subject: Heart Attacks and Drinking Warm Water. Usually I treat such emails as junk, but this one I read. Is there any truth at all in this claim? And are people who “send this to a friend” just gullible?

This is what it says about heart attack:

“A serious note about heart attacks – You should know that not every heart attack symptom is going to be the left arm hurting. Be aware of intense pain in the jaw line.”

“You may never have the first chest pain during the course of a heart attack. Nausea and intense sweating are also common symptoms.”

“60 per cent of people who have a heart attack while they are asleep do not wake up. Pain in the jaw can wake you from a sound sleep.”

“Let’s be careful and be aware. The more we know, the better chance we could survive.”

“A cardiologist says if everyone who reads this message sends it to 10 people you can be sure that we’ll save at least one life. Read this & Send to a friend. It could save a life.”

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