Nutrition in Cancer Care (PDQ®)–Health Professional Version Oct 20, 2022 · The nutrition status of patients with cancer can vary at presentation and through the continuum of cancer care. Many patients experience unintentional weight loss leading to a diagnosis of cancer.[1,2] Studies have reported malnutrition in 30% to 85% of patients with cancer.[3,4] In addition, malnutrition increases treatment toxicities, diminishes quality of life, and accounts for 10% to 20% ...