The Hell's Kitchen star was working in Vietnam earlier this week (begs14Jun10) when he discovered his beloved mother Helen, 66, had been taken ill.
He immediately halted work on a series for Britain's Channel 4 and cancelled an upcoming promotional trip to New Zealand to jet back to England to be by her bedside, according to Britain's The Sun.
Ramsay's spokesperson says, "With the news of his mother's heart attack, Gordon has had to postpone his visit to New Zealand.
"He is so sorry to disappoint his fans. He will be rescheduling."