Former Beatles member Sir Paul McCartney's marriage to Heather Mills may belong to Yesterday, but the ensuing divorce battle has been Here, There and Everywhere in the media for well over a year. The latest revelation: the marital problems allegedly stemmed from issues of the heart -- in a literal sense.

According to a recent New York Post report, Macca's heart condition initially led to the spat with Mills, despite her public allegations of physical and verbal abuse. McCartney, 65, underwent a coronary angioplasty last year but hid the operation from the media until last week. However, new reports suggest that the rock legend has been aware of his heart problem since 2005, when doctors diagnosed him with a heart murmur, and has been getting treatment for it on a regular basis since then.

"This was a major source of problems between him and Heather," the Post quoted an anonymous source as saying on January 7. "He was receiving electrical shocks over the two years on his chest to help with his heart and was under strict instructions to stop drinking completely, which he didn't do.

"It's not a threatening condition," the source added. "He just needs to take better care of himself."

The report claims that Mills, who turns 40 on January 12, ordered her now-estranged husband to improve his lifestyle and even postponed a leg operation for herself in order to allow heart treatment for him. This led to a major argument between them in April 2006, shortly before the couple separated. "She focused on him first," the Post's source said. "He was abusing his body."

The ex-Beatle and Mills married in 2002 and have a daughter, Beatrice, 4. The couple's divorce process has been a Long and Winding Road of its own, full of public accusations and personal attacks.

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