There is some evidence to suggest that tongue-tie may be associated with lactose intolerance, particularly in infants.
For example, a study found that infants with tongue-tie were more likely to have lactose intolerance than infants without tongue-tie.
This may be due to difficulties with breastfeeding and swallowing associated with tongue-tie, which can lead to ingestion of larger amounts of lactose and an increased risk of lactose intolerance.
However, it is important to note that tongue-tie and lactose intolerance are two separate conditions that may co-occur in some individuals.
A healthcare professional with expertise in both conditions can help determine if a person has both tongue-tie and lactose intolerance and provide appropriate treatment.