It is even more dangerous under certain situations such as:
- If the baby is younger than 4 months old
- If the baby was born prematurely or had a low birth weight
- The mother or any other person in the bed is a smoker (even if they do not smoke in bed)
- The person or people in bed are obese

Unsafe bed-sharing increases the chance of a baby dying of SIDS or accidental suffocation.

Bed-sharing is not recommended for any baby with an adult, child or even a pet.
