<s>[INST] Do “miracle diets” have risks? [/INST] “Miracle diets” are those that attempt to achieve rapid weight loss results without much effort, and have multiple health risks. These increase the risk of nutritional deficiencies that can cause an alteration in taste and appetite, hair loss, weak nails, as well as favouring osteoporosis or blood coagulation disorders. Furthermore, vitamin deficiency can cause irritability, ocular, cutaneous, and gastrointestinal lesions, as well as lack of memory and difficulty in concentrating, among others. They also produce negative psychological effects like anxiety, stress and depression that can trigger eating behaviour disorders. And they favour the rebound effect, when returning to previous eating habits. Source: Clinic Barcelona. Link: https://www.clinicbarcelona.org/en/assistance/diseases/obesity/frequent-asked-questions. Field: Endocrinology. Disease: Obesity </s>