Cancer is a major cause of morbidity and mortality throughout the world. It is the second most frequent cause of death in Europe and is becoming the leading cause of death in old age. Cancer will affect one in three of the population at some time in their life, with more than 70% of cancers occurring in those aged over 65 years.

The majority of cancer patients have already experienced weight loss prior to diagnosis. The global incidence of malnutrition during the course of cancer ranges from 30% to 90%, and is dependent on the type, location, grade, stage/spread of the tumour and also on the anticancer treatments, as well as on age, gender and individual susceptibilities. Similarly Weight loss severely reduces the Quality of life of People with AIDs (PWAs). In Tuberculosis also Protein Malnutrition is the major cause of Mortality. There are several studies which prove this outcome.