What is the recommended dose of lactose?

From the Research

Recommended Dose of Lactose

The recommended dose of lactose varies among individuals, particularly those with lactose intolerance or malabsorption.

• Studies suggest that most adults can tolerate 12 to 15 g of lactose, approximately 1 cup of milk, without experiencing significant symptoms 1, 2, 3.
• A study published in 2019 found that adults with decreased lactase expression can still consume up to 12 g of lactose per portion without severe symptoms 4.
• Another study from 1995 noted that while some individuals may experience symptoms after consuming a cup of milk, the majority can tolerate this amount without significant issues 5.

Factors Influencing Lactose Tolerance

Several factors can influence an individual's ability to tolerate lactose, including:

• Lactase deficiency or malabsorption 2, 3
• Genetic predisposition, such as primary adult-type hypolactasia 3
• Colonic metabolism of lactose 5
• Dietary habits and lactose intake 1, 4

Clinical Management of Lactose Intolerance

Clinical management of lactose intolerance typically involves:

• Avoiding lactose-containing foods or restricting lactose intake 1, 2, 3
• Using lactase enzyme supplements or other pharmacological options 5, 3
• Ensuring adequate calcium and vitamin intake to prevent nutritional deficiencies 2, 3