Hi Velan
Fat from fatty foods may stay in the stomach for four hours or longer, producing at the time a sensation of satiety (filled up) but rendering fermentation more likely. Since fermentation products irritate the stomach, and an irritated stomach, Fats clog the digestion. Much pain and indigestion problem will occur, Especially for kids. Try to reduce the fatty & oily foods. Children are ought to be proactive to maintain a healthy digestive system. Simple changes in diet can help to improve digestion disorders in children.
Some points for improve digestive system are mentioned below :
Drink lots of water. Digestion of food requires lots of water,Food should be chewed well. Food digestion begins in the mouth. Proper chewing of food breaks down the food into digestible and absorbable pieces.Kids should be encouraged to eat food that which are natural like home-made foods, fruits and vegetables. processed foods contain fat, sugar and salts. Heavy intake of processed foods slows down the digestion process. Try to avoid those foods as much as possible.Small meals increase the digestion in kids. Large meals increase the stress on the digestive system.