Problem's that might cause by eating these foods.HeartburnBloating 
Upset Stomach
Water Retention
Lack of Energy
Poor Sleep
 things that can be done to improve the quality of food are:
there should be healthy food the canteens
children should bring heathy foods and there must be a menu card like for diiferent days different food. and in the cantten there must be healthy food which children like
children should make sure that they eat fast food leats 

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slow poisoning, stomach upset, vomitings, headache, sometimes thyroid also