Food allergies
Allergies usually have their effects in localized areas of your body, such as your skin, your respiratory system, and your gut. However, if you have food allergies, your problems are not only limited to abdominal cramps and bloating. The consistency of your saliva may start to change as well, especially if there is a long-standing and severe food allergy. Instead of having thick saliva, your thin saliva will not be able to hold back bacteria so much, and they will start attacking your teeth.