Dr. Hill told the W.H.O. "Applying the precautionary principle and saying, 'If we do not know it's good, and there's a reason to think it's bad, why do we do it?' & # 39;
The A.A.P. Dr. Hill said, "It's certainly possible if we revise our recommendations, and if more data becomes available, we could distort that direction in the future," he said. "But without a comprehensive literature search, it's hard to say what's affecting our policies."
World Health Organization guidelines go beyond the recommendations of A.A.P.
"Improving physical activity, reducing sitting times and ensuring a good night's sleep in young children will improve." Bull in a statement.
Researchers also recommended that children under the age of five should not be held in strollers or highchairs or pushchairs and strapped to the back of a caregiver for more than an hour. And children between the ages of 1 and 5 should be physically active for three hours a day and sleep at least ten hours a night.
According to the WHO, the number of obese people worldwide has nearly tripled since 1974. Cases of childhood obesity, once considered the scourge of rich nations, are increasing dramatically in low- and middle-income countries, especially in Africa and Asia.
The organization said that failure to comply with current recommendations for physical activity was responsible for more than five million deaths in all age groups annually.
"What we really need to do is bring play for children," said Juana Willumsen, who works on WHO's Childhood Obesity, in a statement. "It's about making the switch from sitting time to play time while protecting sleep."