Galactose is an essential molecule because it is necessary for the growth of young people. Its chemical formula is c6h12o6 which is the same as glucose. It is part of a group of molecules that are called Monosaccharides or simple sugars. Galactose linked with glucose creates lactose or in other words, milk sugar. Galactose has 33% of the sweetness that sucrose also known as table sugar has. Galactose is most commonly found in milk but it can be also found in plants. Galactose helps in brain development and physical growth. In fact, human milk has more galactose than cow milk which is the most common milk that people use.