1. Increased risk of ear infections

2. Other infections:Several studies have shown that pacifiers are often colonized with Candida and bacterial organisms (typically nonpathogenic).One study found 21 of 40 pacifiers to have a positive culture finding, with none containing the common pathogens of otitis media.Latex pacifiers are more significantly colonized with Candida and Staphylococcus than silicone pacifiers https://www.aafp.org/afp/2009/0415/p681.html

3. Dental issues: Prolonged use can cause changes in the shape of the roof of the mouth. Prolonged use can also prevent proper growth of the mouth and create problems with tooth alignment.​

4. Self regulation: a pacifier can help a child with self regulation. However, what they can’t make up for are physical touch, eye contact, affection, and human warmth. It’s not enough to just give a baby a pacifier and walk away.

What’s more, it’s better to save a pacifier for when it’s truly necessary. For example, when you’re driving in the car and it’s impossible to pick your baby up and comfort him.

In order for children to learn to regulate their emotions on their own, they need someone to have fulfilled this function for them. Therefore, it’s essential for the adults in their lives to be available for them. In short, remember that what your baby really needs is you, and pacifiers are optional.