Michael Stuart Brown (born April 13, 1941 in Brooklyn, New York) is an American geneticist and Nobel Laureate. He was awarded the Nobel Prize in Physiology or Medicine with Joseph L. Goldstein in 1985 for describing the regulation of cholesterol metabolism. Graduated from Cheltenham High School (Wyncote, PA). Brown graduated from the University of Pennsylvania in 1962 and received his M.D. from the University of Pennsylvania School of Medicine in 1966. Moving to the University of Texas Health Science Center in Dallas, now the UT Southwestern Medical Center, Brown and colleague Joseph L. Goldstein researched cholesterol metabolism and discovered that human cells have low-density lipoprotein (LDL) receptors that extract cholesterol from the bloodstream. The lack of sufficient LDL receptors is implicated in familial hypercholesterolemia, which predisposes heavily for cholesterol-related diseases. In addition to explaining the underlying pathology of this disease, their work uncovered a fundamental aspect of cell biology - Receptor-mediated endocytosis.