Dr. Alan Hirsch, creator of the SENSA® Metabolic System, is renowned for his 25 years of research on the science of smell and taste. He has written seven books on the subject, conducted and published more than 180 research studies, and holds multiple patents relating to the use of olfactory mechanisms to influence biological responses. His research has been cited in major publications, including Time, Good Housekeeping, and USA Today, and he is a frequent guest on television programs such as Dateline NBC, CNN, the CBS Early Show, Good Morning America, and Extra.