Proshred Elite In some cases there is a gradual decrease in the severity of this feeling, while in other cases it is quite sudden. It is also experienced with other symptoms like sudden weight loss, nausea, low blood sugar levels, joint pain, etc. As I mentioned earlier, in case you experience continuous and constant loss of appetite and you have a family history of any of the autoimmune disorders, then it is always advisable to consult a knowledgeable health care professional. Other Reasons Apart from all the reasons that are mentioned above, several psychiatric conditions like schizophrenia, anxiety, depression, dementia, Alzheimer's disease, eating disorders like bulimia, binge eating disorder, anorexia nervosa, etc. may cause this health condition. Certain types of medication like depression medication, hypertension medication, antibiotics, narcotics, alcohol, metformin, and medical therapies like chemotherapy, radiation therapy, etc. may also cause a sudden and constant feeling of loss of appetite and nausea, with several other physiological symptoms. As I have stated it repeatedly, it is always advisable to consult a health care provider if one is suffering with constant onsets of a decreased appetite. http://www.potentmuscles.com/proshred-elite