Fatty acids have traditionally been described as artery clogging species that is detrimental to overall health. The most prevalent fatty acid is palmitic acid (PA), a sixteen carbon chain fatty acid that is ubiquitous in biological systems. PA is prevalent in most eukaryotic cell membranes and in the mitochondria derived from the Krebs' cycle utilising acetyl-coenzyme A as its precursor. PA is found in a variety of plants with a high amounts in coconut oil. Many cosmetics, shampoos, and commercialised beauty products contain PA providing structure and substance to the gel or reagent. This book discusses the occurrence, biochemistry, and health effects of palmitic acid.