How much lactose can a person with lactose intolerance typically tolerate at once?

Individuals with lactose intolerance typically have varying thresholds for how much lactose they can tolerate, but it is commonly recognized that many can comfortably digest about 12 grams of lactose at one time. This amount is equivalent to approximately one cup of milk.

Research indicates that a portion of people with lactose intolerance may experience only mild symptoms when consuming small to moderate amounts of lactose, while larger quantities can lead to discomfort and digestive issues. The level of tolerance can differ based on individual sensitivity, the types of dairy consumed, and the presence of other food in the stomach, which may influence how lactose is processed in the digestive system.

When considering the other amounts, while some individuals may handle up to 6 grams with little to no symptoms, and very few might manage 18 grams, the consensus around the 12-gram threshold aligns with dietary recommendations for those with lactose intolerance. Larger amounts, like 24 grams, are generally more likely to produce significant symptoms among the majority of individuals with this condition, thus making 12 grams the most accepted benchmark for lactose tolerance.