The metabolic system is the vast collection of ALL chemical reactions required by a living organism to maintain life. Metabolism includes the synthesis and repair of all cells, production, regulation, and degradation of hormones, neurotransmitters, and other cell-signaling compounds. It includes all of the processes that break down and remove dead cells, unwanted pathogens, xenobiotics and waste products. It supplies the resources to adapt to stress. Collectively, it represents every vital highway along which the functions of life are carried out. Dietitians are experts in metabolic science and can help you navigate and customize a successful treatment plan for a variety of chronic illnesses.