Policy, Systems, and Environmental Changes in Child Nutrition Programs: A Systematic Literature Review.

The National School Lunch Program (NSLP) provides healthy food to millions of children annually. To promote increased lunch consumption, policy, systems, and environmental (PSE) change strategies are being implemented in child nutrition programs. An evaluation of the current evidence supporting PSE interventions in school nutrition programs is needed to facilitate evidence-based practices across the nation for programs. This systematic review aims to determine the quality and breadth of available evidence of the effectiveness of PSE strategies on the consumption and waste of fruits, vegetables, milk, and water in the NSLP. The inclusion criteria required studies to occur in a United States K-12 school setting, data collection after 2012, report consumption and waste findings for fruit, vegetable, milk, or water, and be an original research article. Articles included in the review are restricted to positive or neutral quality. Thirty studies are included, policy level (n = 4), systems level (n = 8), environmental level (n = 10), and multi-category (n = 8). Results from positively rated policy-level studies suggest that recess before lunch may increase milk consumption, whereas removing flavored milk may decrease consumption. System-level studies of offering vegetables first in isolation of other meal components and offering spiced vegetables compared with traditional preparations may increase vegetable consumption, and locally procuring produce may increase fruit and vegetable consumption. Environmental-level studies such as water promotion strategies such as placing cups near drinking fountains may increase water consumption. Improving the convenience, attractiveness, and palatability of fruits and vegetables may increase consumption. Future PSE research in child nutrition programs should incorporate implementation aides and metrics into their study designs to allow a better understanding of how to sustain interventions from the perspective of school nutrition professionals.

Oncology Registered Dietitian Nutritionists' Knowledge, Attitudes, and Practices Related to Food Insecurity among Cancer Survivors: A Qualitative Study.

BACKGROUND: Understanding the knowledge, attitudes, and practices pertaining to food insecurity among oncology registered dietitian nutritionists (RDNs) is critical to ensuring that cancer survivors have adequate nutrition-a fundamental component of successful treatment and recovery. OBJECTIVE: To qualitatively assess oncology RDNs' knowledge, attitudes, and practices regarding the food access needs of their patients using a qualitative semantic approach to thematic analysis. DESIGN: The qualitative cross-sectional study was conducted from September 2018 to January 2019. PARTICIPANTS AND SETTING: Forty-one oncology RDNs working with cancer survivors in various clinical settings across the United States participated. MAIN OUTCOME MEASURES: Participants completed a semistructured, in-depth interview via telephone, lasting an average of 49 minutes. STATISTICAL ANALYSES PERFORMED: Two coders (primary and secondary) trained in qualitative thematic data analysis methods used a semantic approach to thematic analysis to analyze transcripts. A qualitative and mixed methods online coding program Dedoose was used to organize and analyze the data. RESULTS: Participants defined food insecurity (FI) as a lack of access to nutritious foods and a lack of resources to purchase nutritious foods. RDNs stated they believe FI is a serious problem in the United Staes, has a greater influence on cancer survivors than healthy individuals and they have specific concerns about FI among their own patients. Despite their concerns, most expressed that they do not use a validated tool to identify FI, nor were they aware that any exists. Only a small proportion of the RDNs stated that they regularly ask patients about their food access needs. CONCLUSIONS: Although Oncology RDNs have heard of FI, they do not routinely assess patients' food security status with a validated tool, nor do they consistently ask patients directly about their food access needs. These findings suggest there is a need for developing education and training opportunities for oncology RDNs to enhance their ability to screen for and address FI with their patients.

Empirical Dietary Patterns Associated with Food Insecurity in U.S. Cancer Survivors: NHANES 1999-2018.

(1) Background: Food insecurity (FI) is a public health and sociodemographic phenomenon that besets many cancer survivors in the United States. FI in cancer survivors may arise as a consequence of financial toxicity stemming from treatment costs, physical impairment, labor force egress, or a combination of those factors. To our knowledge, an understanding of the dietary intake practices of this population has not been delineated but is imperative for addressing the needs of this vulnerable population; (2) Methods: Using data from NHANES, 1999-2018, we characterized major dietary patterns in the food insecure cancer survivor population using: i. penalized logistic regression (logit) and ii. principal components analysis (PCA). We validated these patterns by examining the association of those patterns with food insecurity in the cancer population; (3) Results: Four dietary patterns were extracted with penalized logit and two with PCA. In the pattern validation phase, we found several patterns exhibited strong associations with FI. The FI, SNAP, and Household Size patterns (all extracted with penalized logit) harbored the strongest associations and there was evidence of stronger associations in those moderately removed from a cancer diagnosis (≥2 and <6 years since diagnosis); (4) Conclusions: FI may play an influential role on the dietary intake patterns of cancer survivors in the U.S. The results highlight the relevance of FI screening and monitoring for cancer survivors.

Carbohydrate Nutrition and the Risk of Cancer.

PURPOSE OF REVIEW: This review summarizes a selection of epidemiologic research assessing the associations between carbohydrate intake and cancer incidence and survival. Evidence for plausible biological mechanisms is also considered. RECENT FINDINGS: The mechanistic paradigm explaining the relationship between carbohydrates and cancer risk has been contested by numerous observational studies. Carbohydrates have conventionally been ascribed a deleterious role in the field of cancer research due to previous preclinical findings. A breadth of studies suggests that complex carbohydrate intake is inversely associated with risk of a number of cancer types. Data from studies assessing simple carbohydrates and cancer risk are mixed. Furthermore, recommendations for subsequent studies are framed.