Lactose Intolerance


Lactose intolerance is the lack of the enzyme lactose, which causes failure in the digestion process of lactose. Lactose is the sugar in milk. Lactase deficiency is common throughout the world. Lactose intolerance main cause is unknown, but mostly it is caused by genetic factors. 


Symptoms occur after the ingestion of lactose. Some of which are abdominal pain, bloating, diarrhea, or flatulence. 


Malabsorption of lactose grade differs between individuals. Small amounts of lactose can be ingested without symptoms in most of the lactose-intolerant patients.


Lactose intolerance can be treated with controlling lactose in the dietary intake.

A lactose-intolerant patient should avoid products containing lactose such as, milk, butter, cream sauces, and food include milk. All kinds of animals’ milk contain lactose.

According to that, a lactose-intolerant patient should include calcium in their diets. Fishes such as, sardines, salmon, and tuna are calcium-rich sources. Also, leafy green vegetables such as, kale, spinach, or broccoli,  are rich-calcium source.


Also, lactase supplements can be added to the food containing lactose.

Yogurt is a diary product that contains lactose, yet it can be digested well. It can be digested because it contain Lactobacillus acidophilus.

Sherbet is an alternative for ice cream.

Soy milk, almond milk, rice milk, and coconut milk are alternatives for animals’ milk.

Coconut milk is similar to cow’s milk, but it is high in saturated fat.


1. Gilliland S, Kim H. Effect of Viable Starter Culture Bacteria in Yogurt on Lactose Utilization in Humans. 2017.

2. Savaiano D. Lactose digestion from yogurt: mechanism and relevance [Internet]. 2017 [cited 20 October 2017]. Available from:

3. Suchy F, Brannon P, Carpenter T, Fernandez J, Gilsanz V, Gould J et al. NIH consensus development conference statement: Lactose intolerance and health. [Internet]. 2017 [cited 20 October 2017]. Available from:

4. Scrimshaw N, Murray E. The acceptability of milk and milk products in populations with a high prevalence of lactose intolerance. [Internet]. 2017 [cited 20 October 2017]. Available from:

5. Lactose Intolerance [Internet]. Taylor & Francis. 2017 [cited 20 October 2017]. Available from:

6. Swagerty J, Walling A, Klein R. Lactose intolerance. [Internet]. 2017 [cited 20 October 2017]. Available from:

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