A former head girl and top athlete consumed by anorexia has died from a "laxative addiction", a London inquest was told.

The Daily Mail reports that 26-year-old Georgia Willson-Pemberton bought more than 6000 laxatives on the internet during her four-year battle with the eating disorder.

Miss Willson-Pemberton died in December after overdosing on laxative pills which caused "catastrophic organ failure".

The inquest was told the that former head girl and child ski champion lost ambition after graduating from European Business School.

Her weight had plunged to less than 44kg - desperately low for a 26-year-old woman who was 1.8 metres tall, the Daily Mail reports.

In the grip of anorexia, she had continued to take laxatives, buying more than 6,000 over the internet from supermarkets, the inquest was told.

Father Robert Willson-Pemberton sobbed as he told her inquest how he was helpless to save his "hugely intelligent" daughter.

"Her world was her oyster, she could've done anything," the 62-year-old said. "Her ambition just disappeared. This disease just consumed her. That's all she thought about.'

Her worried parents paid for treatment at several of the world's leading eating disorder centres, including a three-month stay at the Monte Nido Centre in California, which charges up to $50,000 a month and has treated celebrities including actress Portia de Rossi.

After collapsing at her parents' $5 million home in Putney, south-west London, Miss Willson-Pemberton told doctors she had taken 50 laxatives several days earlier and surgeons at the Chelsea and Westminster Hospital found her gullet, stomach, small intestine and liver had been irreparably damaged.

Intensive care consultant Michelle Hayes said the "catastrophic organ damage" was caused by the overdose and long-term chronic laxative abuse.

According to the Daily Mail in London, Miss Willson-Pemberton had been a star pupil at the $43,000-a-year Heathfield School in Ascot, Berkshire, becoming head girl as well as a junior skiing gold medallist in national championships.

She was pictured with her mother Elizabeth on the website of society magazine Tatler, and her brother Alexander, 29, reportedly attended a prestigious cookery school with Pippa Middleton.

She developed anorexia in 2008 while studying for a degree in international marketing at the European Business School in central London, the Daily Mail reports.

Miss Willson-Pemberton gained weight as an inpatient at centres in the US and Britain but was clever at deceiving doctors, the inquest was told.

During one stay she smuggled in 200 laxative pills inside a padded bra and she worked out methods of influencing weigh-ins and blood test results.

She also began drinking heavily and hid vodka bottles underneath her parents' sofa and behind a radiator at one treatment centre.

The West Australian

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