Too much saturated fatty acids, monounsaturated, and polyunsaturated fatty acids can be harmful to older children and adults. Infants have a much faster metabolism than that of both adults and young children. Breast milk is full of mostly saturated fatty acids to accommodate rapid infant growth generated by this metabolism. Many European formulas contain palm oil, rapeseed oil, and sunflower oil to replicate the formulation of saturated fats found in breast milk in baby formula. These oils are completely safe and natural for infant consumption.