Are food preservatives safe to eat? RD Natalie Allen offers some insights. May 8, 2020 by university communicationsShare:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)A lot of the food we consume contain food preservatives – a type of additive that helps maintain the taste, texture, nutrition and appearance of food. What types of preservatives are there? Are they safe for you? Natalie Allen, a registered dietitian and clinical instructor of biomedical sciences at Missouri State University, answers these questions on Livestrong.