I have yet to meet a women who doesn't complain about her period. Goodness knows I have. We worry about it's arrival each month (admit it -- you've counted days on a calendar worrying about whether "it" will come during prom or your wedding or your beach vacation). But when it doesn't arrive like clockwork, that's worrisome in a whole other way. For women with irregular periods the question is usually "why?"

Researchers from four universities surveyed women and found that only 28% had perfectly regular cycles. The reasons for irregular periods vary. Here are just some of the possibilities:

• Late periods. If you're over 45 and your periods are stretching out for longer periods of time you might be perimenopausal. If you're under 45, talk to your doctor -- you may have a hormone imbalance.

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Some people are apparently worried that Paul McCartney's health is in jeopardy due to a heart irregularity that first presented itself more than a year ago.

The 65-year-old writes on his website: "I'm happy to say that I feel great and I have passed my most recent medical [exam] with flying colours."

It seems the media recently reported an exaggerated version of McCartney's health status.

"The media reports have, as usual, completely distorted the story, calling it an angioplasty, which is entirely untrue, and this is why so many friends have been concerned about my health," he says.

So all is well with the former Beatle who says, ""I look forward to a rocking 2008!"

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