Because fat soluble vitamins are soluble in fats, they can usually also be found in fatty foods. However, if there is a shortage of fats or the absorption of fats in our intestine is poor, these vitamins cannot be efficiently used.
Fat soluble vitamins are absorbed in the intestines with bile salts (a fluid secreted by the liver) and lymph or protein “taxis” carry them in the blood to their destinations.
Unlike water soluble vitamins, excess amounts can be stored in our body for weeks or months. Vitamin A, D and K are mainly stored in the liver, while Vitamin E is mainly stored in body fat.
But most importantly, excessive amounts of vitamin A, and D, can be toxic.
"Prevention is better than cure."