Research involving nearly 60,000 Japanese people showed a link between eating slower or faster, and losing or gaining weight.
At the conclusion of the study, 107.7 million children and 603.7 million adults worldwide were deemed to be obese.
She suffers from a range of health problems including elephantiasis, a condition that causes the limbs and other body parts to swell.
The move "is within the framework of developing the broadcaster, in form and content".
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