Simplify the following text for a Grade 7 native English-speaking person.
Original: Vitamin A is a fat soluble vitamin and depends on micellar solubilization for dispersion into the small intestine , which results in poor use of vitamin A from low-fat diets .
Simplified: This is because , vitamin A is not soluble in water , and the human body can not get rid of the excess vitamin A easily through urination . Too much vitamin A can make someone very sick .