They also recommend minimizing extra items in the crib, such as stuffed animals, and washing sleep clothing and bedding often. "The sheets and sleeper act as a very effective barrier," Diamond said.

One of the great debates among new parents and practitioners: Where should baby sleep? Solo in a bassinet or crib – or in the family bed? You certainly can make the case for either choice.

Crib mattresses have been found to emit toxic chemicals while children sleep, according to a new study. University of Toronto researchers found "worrisome levels of more than two dozen phthalates ...