Mystery over Gwyneth Paltrow's health as she is wheelchaired into hospital

Gwyneth Paltrow was admitted into hospital on Monday, sparking new concerns for her health.

According to US reports, the 35-year-old actress was taken to New York's Mount Sinai Hospital on Monday afternoon, where she was spotted "slumped in a wheelchair".

While a spokesman for the Oscar-winning star refused to elaborate on her condition, Us Weekly magazine revealed she was taken to casualty by her British husband, Chris Martin.

After checking in under her married name, "Gwyneth Martin", she was reportedly seen 'slumped over in a wheelchair pushed by Martin."

The onlooker added: "She looked not well."

Within hours of arriving at the hospital, the American star and mother of two received a delivery from US organic home supply store, Organics Avenue.

Although the reason for her visit is not known, a source told the publication she stayed overnight.

Paltrow's spokesman Stephen Huvane said the 35-year-old Oscar winner was now fine and back home but declined to comment further.

Last night speculation emerged that Miss Paltrow's recent hectic work schedule, combined with the demands of motherhood, were to blame for her latest troubles.

She recently finished filming the sci-fi action movie, Iron Man, for which she lost weight and completed an arduous fitness programme.

Just weeks later she began filming for her next role, Two Lovers, opposite Joaquin Phoenix, which again saw her working over much of the Christmas and New Year period.

Meanwhile there have also been ongoing rumours of a rift between herself and the Coldplay frontman - although these have always been vehemently denied by the couple.

Despite the fact both parties have high profile careers, the couple has always been extremely hands-on parents, managing to combine hectic work loads with a stable family life.

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Supportive husband: Gwyneth with Coldplay's Chris Martin