Personally, i feel it's okay to let them suck on it. i read that sucking on pacifirt while they sleep decrease their risk of SIDS and babies will self soothe.
The theory is the constant sucking motion stimulates them enough to prevent them from not breathing. My Pd likes them for that reason but for 1 year old or older, she makes me take away since its harder to take away as they grow older.
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