Genetic diseases caused by the lack of some important enzymes to digest some substances in the body causing food intolerance

Biting genetic diseases due to the lack of some important enzymes to digest some substances in the body
• Lactase deficiency is important in digestion of milk sugar, leading to chronic diarrhea and symptoms in the digestive system after the child drinks milk.
• A deficiency in the enzyme that digests the alcohol (yeast), causing gastrointestinal disturbances after alcohol use.