(Agencies)
Updated: 2007-12-04 11:12

WASHINGTON -- Those lords-a-leaping and ladies dancing may want to consider the downside of the holidays: Heart attack season has arrived. December and January are the deadliest months for heart disease, and many of the things that make the season merry are culprits: Rich meals, more alcohol -- and all that extra stress.

Terry Bieber, 51, poses for a photograph in Suitland, Md. on Monday, Dec. 3, 2007, about a year after her heart attack. She had two shunts put in and is currently doing well. Holiday heart attack season has arrived. [Agencies]

But what may make the Christmas coronary more deadly than the same-size heart attack in, say, August, is a double dose of denial. It's not uncommon for people to initially shrug off chest pain as indigestion. Research suggests they're even more reluctant for a run to the emergency room when it means disrupting a holiday gathering, or if they've traveled to a strange city -- meaning they arrive sicker.

Minutes matter.

"You have only a short window of opportunity to save heart muscle," warns Dr. William Suddath of Washington Hospital Center in the nation's capital -- where a cardiac team on-duty 24 hours a day aims to start clearing victims' clogged arteries within 15 minutes of their arrival in the emergency room.

How bad each year is varies widely, but some hospitals say they saw an upswing in heart attacks start on Thanksgiving weekend. At Suddath's hospital, it started with a surprise spike the weekend before Thanksgiving -- with so many critically ill patients that doctors ran out of a key heart-pumping machine and had to rent two extras.

Doctors have long braced for the seasonal upswing. A 2004 study confirmed it was a nationwide phenomenon, with peaks in death coinciding around the Christmas and New Year's holidays.

Why is harder to pin down. Vanderbilt University cardiologist Dr. Keith Churchwell says a "hurricane of factors" can tip someone at risk of a heart attack over the edge during this busy time of year.

"You can't be too busy to ignore your cardiovascular health," he says -- but that's a key excuse he hears from his own patients.

Consider:

_Busy revelers tend to skip their medications, forget them when traveling or be unable to get refills far from home.

_What dieter can resist holiday goodies? The few extra pounds so many people gain will haunt you long-term. Right away, a particularly heavy meal, especially a high-fat one, stresses the heart as it is digested. Blood pressure and heart rate increase. There's even evidence that the lining of arteries becomes temporarily more clot-prone.

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