Ghrelin, a hunger inducing hormone, sounds like the word “gremlin,” at least to me. After weight loss, regardless of the diet employed, there are changes in circulating hormones involved in the regulation of body weight. Ghrelin levels tend to increase so that makes you more hungry and levels of the nine appetite-suppressing hormones decrease, so they aren‘t doing their job. The word gremlin became popularized in the early 20th century, originally used as a creature that sabotaged aircraft, but the word works for diets, too. Even after 3 years, your body still responds to diets this way.