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Summary
Lactose intolerance is often misperceived, especially in ethnic populations. Verified lactose intolerance is rare and manageable, not a reason to avoid dairy foods and their calcium benefits.
Area of Science:
- Nutrition Science
- Gastroenterology
Background:
- Dairy avoidance is increasing due to misperceptions about lactose intolerance.
- Genetic factors influence lactose digestion, declining in childhood across all ethnic groups.
Purpose of the Study:
- To examine the scientific evidence on lactose intolerance prevalence and management.
- To address the misconception that ethnic populations cannot tolerate dairy foods.
Main Methods:
- Review of scientific literature on lactose intolerance.
- Analysis of dietary guidelines and management strategies.
Main Results:
- Verified lactose intolerance is uncommon, despite widespread lactase nonpersistence.
- Lactose intolerance symptoms are easily managed and do not necessitate dairy elimination.
Conclusions:
- Eliminating dairy foods is rarely necessary and generally not advised.
- Individuals can consume dairy, meeting calcium needs, even with managed lactose intolerance.