Hospitalized Cancer Patients Fall Far Short of Prescribed Nutrition, Study Finds

Patients hospitalized with gastrointestinal, lung, or head and neck cancer consumed substantially less energy and protein than their dietitians prescribed, and those shortfalls were linked to troubling symptoms and to measurable declines in body weight within just four days, according to a longitudinal study published in Supportive Care in Cancer. The findings, drawn from 77 patients followed during the first six days of hospital admission, describe how quickly nutritional status can shift in this vulnerable population and point to specific symptoms that clinicians may be able to target early in a hospital stay.

The research team, based at the Hospital de Clínicas de Porto Alegre in Brazil, recruited adult patients with a confirmed diagnosis of gastrointestinal, lung, or head and neck cancer who had been prescribed an exclusively oral diet, with or without oral nutritional supplementation. Patients admitted through the emergency department or intensive care unit, those with reduced consciousness, those receiving enteral or parenteral nutrition, and those with edema or certain infections were excluded. Each participant was assessed at the bedside on hospitalization days 2, 4, and 6, a follow-up window chosen to match the median hospital stay reported in an earlier cohort study by the same group.

At each assessment point, researchers measured appetite using a 100-millimeter visual analogue scale anchored from no appetite at all to very good appetite, and they quantified dietary intake with the Food Intake Visual Scale, in which patients report the proportion of hospital meals consumed over the previous 24 hours. A mean appetite score of 70 millimeters or less across the three assessments defined reduced appetite, while a mean intake below 75 percent of meals defined reduced dietary intake. By applying the reported meal proportions to the energy and protein content of the corresponding prescribed meals, the team estimated actual intake and compared it with the amounts individually determined by the hospital clinical dietitian, who followed oncology nutrition therapy recommendations of 25 to 30 kilocalories per kilogram of body weight per day and more than 1.0 gram of protein per kilogram per day.

The results were stark. On all three assessment days, estimated energy and protein intake fell significantly below prescribed amounts, with median energy deficits ranging from 867 to 1,012 kilocalories per day and median protein deficits from 35.2 to 50.1 grams per day. Expressed relative to body weight, the gaps reached median differences of up to 14.2 kilocalories per kilogram per day for energy and 0.75 grams per kilogram per day for protein. Only 44.2 percent of patients achieved a mean dietary intake of at least 75 percent across the three assessments. These deficits align with earlier findings that hospitalized oncology patients rarely meet their nutritional requirements despite individualized prescriptions; previous research has reported that only about 9 percent of such patients meet caloric goals and just a quarter achieve recommended protein intake.

The patients themselves arrived in a precarious state. The cohort had a mean age of 62.6 years, was 54.5 percent male, and was dominated by gastrointestinal cancer, which accounted for 70.1 percent of diagnoses. Most patients had advanced-stage disease, with 84.6 percent at stage III or IV and 37.7 percent already carrying metastases. Nutritional screening with the Patient-Generated Subjective Global Assessment Short Form identified 84.4 percent as being at nutritional risk, and the full assessment classified 80.6 percent as moderately or severely malnourished. Indirect anthropometric markers painted a similarly concerning picture: low calf circumference was observed in 58.4 percent of patients without body mass index adjustment and in 83.1 percent after adjustment, low mid-upper arm circumference in 53.2 percent rising to 66.2 percent after adjustment, and low handgrip strength in 41.6 percent.

When the researchers examined which factors accompanied reduced dietary intake, nutrition impact symptoms stood out. Patients whose mean intake fell below 75 percent had significantly higher prevalence of anorexia, dry mouth, taste alteration, and smell alteration than those who ate adequately. Appetite itself tracked intake closely: among patients with reduced dietary intake, 88.4 percent predominantly had reduced appetite, whereas among those with adequate intake, 76.5 percent mainly reported good appetite. The study notes that anorexia in cancer has a multifactorial etiology involving treatment effects and inflammation-related neuroendocrine dysregulation that can suppress appetite, while dry mouth, often linked to chemotherapy- and radiotherapy-induced salivary gland dysfunction, may compound the problem through its association with altered taste and smell.

Cancer-related clinical factors also mattered. Tumor site was significantly associated with both reduced appetite and reduced dietary intake, with adjusted residual analysis indicating that lung cancer contributed positively to these associations while gastrointestinal cancer contributed negatively. Cancer stage, by contrast, showed no association with either outcome. Chemotherapy received within the previous three months was associated with reduced dietary intake but not with reduced appetite, a pattern the authors suggest may reflect treatment side effects such as nausea, diarrhea, and taste disturbances, which can appear early during chemotherapy, persist for weeks or months, and typically normalize within three to six months after treatment completion. Nearly 40 percent of the study participants had recently received chemotherapy. Surgery and radiotherapy were not associated with either reduced appetite or reduced intake.

The most striking finding emerged from the longitudinal analysis of body composition indicators, conducted separately for men and women using generalized estimating equations. Among men with reduced dietary intake, estimated mean body weight declined by 1.02 kilograms, from 66.25 to 65.23 kilograms, between days 2 and 6, while weight remained stable among men who ate adequately. Mid-upper arm circumference adjusted for body mass index also declined in this group, dropping by 0.21 centimeters over the same interval. No significant changes were observed in calf circumference or handgrip strength over the short observation period, and among women, no significant effects of time, dietary intake group, or their interaction appeared for any indicator. The authors caution that the reasons for these sex-specific differences remain uncertain and may partly reflect the short follow-up and the reduced sample size after stratification by sex, and they note that mid-upper arm circumference is an indirect measure influenced by both muscle and subcutaneous tissue, so these changes should not be interpreted as direct evidence of skeletal muscle loss.

The clinical stakes of even modest early weight change are considerable. A recent meta-analysis of 73 cohort studies found that decreases in body weight are consistently associated with poorer survival across cancer diagnoses, and in patients with lung cancer, moderate weight loss of 5 percent or more over two months has been shown to predict reduced overall and progression-free survival, with these associations holding independent of cancer diagnosis or stage. Unintentional weight loss in cancer is often multifactorial, arising from reduced intake, nutrition impact symptoms, and cancer cachexia, and systemic inflammation may interact with these factors to accelerate deterioration. Low handgrip strength, observed in more than 40 percent of this cohort, has been linked in prior research to chemotherapy toxicity, higher mortality, poorer functional status, and decreased physical performance, particularly in advanced-stage disease.

The study has limitations that shape how its findings should be read. Assessments covered only the first six days of hospitalization, capturing a clinically critical early phase but not the entire stay. Dietary intake was estimated from the overall proportion of meals consumed, an approach that cannot account for selective consumption of individual meal components or unrecorded nutritional supplementation, and may therefore have over- or underestimated actual energy and protein intake. Anthropometric measurements may have been influenced by interobserver variability and fluid balance despite standardized procedures. Malnutrition was not diagnosed using the Global Leadership Initiative on Malnutrition framework, which limits comparability with studies applying those criteria, and the focus on high-risk cancer diagnoses restricts generalizability even as it strengthens clinical relevance for the populations most affected.

For routine practice, the authors argue that the findings underscore the value of systematic monitoring of dietary intake and symptom burden from the moment of admission. Tools such as the Patient-Generated Subjective Global Assessment, in either its short or complete form, may help identify symptom burden and support targeted interventions, while simple bedside measures like body weight and mid-upper arm circumference can flag early nutritional decline and prompt timely adjustment of care. Nutritional management aligned with European Society for Parenteral and Enteral Nutrition recommendations, including individualized counseling, management of nutrition impact symptoms, and energy- and protein-dense strategies with oral supplementation when indicated, remains central to care. In this cohort, the message was clear: insufficient dietary intake is an early and clinically significant event in hospitalized patients with cancer, and recognizing the symptoms and treatment factors that accompany it may be the first step toward preventing the nutritional deterioration that so often follows.

Subject of Research: Insufficient dietary intake and symptom burden associated with early nutritional decline in hospitalized patients with cancer

Article Title: Insufficient dietary intake and symptom burden are associated with early nutritional decline in hospitalized patients with cancer

Article References: Soares, C. H., Maffini, L. F., Friedrich, H. J., Faccin, G. S., & Steemburgo, T. (2026). Insufficient dietary intake and symptom burden are associated with early nutritional decline in hospitalized patients with cancer. Supportive Care in Cancer, 34(11), Article 1147. https://doi.org/10.1007/s00520-026-11410-6

Image Credits: AI Generated

DOI: 10.1007/s00520-026-11410-6

Keywords: cancer, malnutrition, hospitalized patients, dietary intake, nutrition impact symptoms, anorexia, chemotherapy, body weight, handgrip strength, ESPEN guidelines, oncology nutrition, longitudinal study