Lynne Chepulis

The long-term effects of feeding honey compared with sucrose and a sugar-free diet on weight gain, lipid profiles, and DEXA measurements in rats.

To determine whether honey and sucrose would have differential effects on weight gain during long-term feeding, 45 2-mo-old Sprague Dawley rats were fed a powdered diet that was either sugar-free or contained 7.9% sucrose or 10% honey ad libitum for 52 wk (honey is 21% water). Weight gain was assessed every 1 to 2 wk and food intake was measured every 2 mo. At the completion of the study blood samples were removed for measurement of blood sugar (HbA1c) and a fasting lipid profile. DEXA analyses were then performed to determine body composition and bone mineral densities. Overall weight gain and body fat levels were significantly higher in sucrose-fed rats and similar for those fed honey or a sugar-free diet. HbA1c levels were significantly reduced, and HDL-cholesterol significantly increased, in honey-fed compared with rats fed sucrose or a sugar free diet, but no other differences in lipid profiles were found. No differences in bone mineral density were observed between honey- and sucrose-fed rats, although it was significantly increased in honey-fed rats compared with those fed the sugar-free diet.

The effects of long-term honey, sucrose or sugar-free diets on memory and anxiety in rats

Sucrose is considered by many to be detrimental to health, giving rise to deterioration of the body associated with ageing. This study was undertaken to determine whether replacing sucrose in the diet long-term with honey that has a high antioxidant content could decrease deterioration in brain function during ageing. Forty-five 2-month old Sprague Dawley rats were fed ad libitum for 52 weeks on a powdered diet that was either sugar-free or contained 7.9% sucrose or 10% honey (which is the equivalent amount of sugar). Anxiety levels were assessed using an Elevated Plus Maze, whilst a Y maze and an Object Recognition task were used to assess memory. Locomotor activity was also measured using an Open Field task to ensure that differences in activity levels did not bias results in the other tasks. Anxiety generally decreased overall from 3 to 12 months, but the honey-fed rats showed significantly less anxiety at all stages of ageing compared with those fed sucrose. Honey-fed animals also displayed better spatial memory throughout the 12-month period: at 9 and 12 months a significantly greater proportion of honey-fed rats recognised the novel arm as the unvisited arm of the maze compared to rats on a sugar-free or sucrose-based diet. No significant differences among groups were observed in the Object Recognition task, and there appeared to be no differences in locomotor activity among groups at either 6 or 12 months. In conclusion, it appears that consumption of honey may reduce anxiety and improve spatial memory in middle age.

An Initial Investigation into the Anti-inflammatory Activity and Antioxidant Capacity of alpha-Cyclodextrin-Complexed Manuka Honey

Abstract The bioactive properties of Manuka honey are now well recognised, but the nature of honey (a sticky, viscous fluid) can make it hard to use as a health remedy. A new technology using encapsulation of Manuka honey with alpha-cyclodextrin molecules has been developed, creating a free-flowing powder that can easily be added to foods and beverages, or tableted / made into capsules for use in health. In this study, we investigated for antioxidant and anti-inflammatory activity. Antioxidant capacity of raw Manuka honeys and matched complexes was measured using the CUPRAC method. Results showed that the antioxidant activity of honey decreased when complexed, this being directly related to dilution of the final product with alpha-cyclodextrin. Anti-inflammatory activity was assessed by measuring inhibition of neutrophil TNF-alpha secretion. Contradictory results were produced, with both stimulation and inhibition of TNF-alpha being observed. Data from this study indicate that the formation of cyclodextrin-based complexes of Manuka honey may potentiate the anti-inflammatory activity of honey, but this may differ depending on methylglyoxal content and the presence of other factors.

Evaluation of the Nutritional Knowledge of Undergraduate Nursing Students.

BACKGROUND Obesity is prevalent in health care workers, but it is unknown whether a lack of nutritional knowledge contributes to this. This study measured the nutrition knowledge of undergraduate nursing students to identify knowledge gaps that could be addressed through nutrition teaching in an updated undergraduate nursing curriculum. METHOD Undergraduate nursing students (N = 197) completed a nutrition knowledge survey with questions on demographics, body composition, nutrition labels, food packaging claims, and healthy food-purchasing choices. RESULTS Mean overall nutritional knowledge scores were low, but overall scores were higher for students who had received nutrition teaching (60.5% versus 52.5%; F[1, 187] = 7.2, p < 0.001). Improvements in nutrition knowledge were consistent across all ethnic groups, and no effects of age were observed. CONCLUSION To sufficiently prepare nurses for their public health role in obesity prevention, more nutrition education is needed in undergraduate nursing education programs, with emphasis on ethnic-specific educational requirements.

Health and Nutritional Literacy of New Zealand Nursing Students

BACKGROUND The published literature suggests that RNs are more overweight and obese than the general population. This research investigates associations between nutrition literacy, anthropometry measures, and nutritional biomarkers in an undergraduate nursing student population. METHOD Year-one nursing students from two tertiary education institutions in New Zealand were invited to participate in an observational, convenience sample study. Data collection from participants (N = 103) included a nutrition literacy questionnaire, anthropometry measures, and blood lipid, glucose, and HbA1c concentrations. RESULTS Approximately 51% of participants were either overweight or obese, which is a similar prevalence to the New Zealand demographic-matched population. Mean body mass index was 26.7 ± 6.3 kg/m2 and body fat was 29% ± 8.3%. The mean literacy score was 56.7% ± 13.2%. The literacy score was inversely associated with anthropometry measures and total cholesterol/high-density lipoprotein cholesterol ratio and positively associated with high-density lipoprotein cholesterol. CONCLUSIONS Nutrition literacy had a statistically significant influence on anthropometry and lipid measures. [J Nurs Educ. 2017;56(1):43-48.].

Sugar content of supermarket beverages commonly consumed by children in New Zealand

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Added sugar and sodium levels in New Zealand processed fruit and vegetable-based products: Processed fruit and vegetable products

AIM Fruit and vegetables are strongly promoted because of the nutrients they provide; many processed products contain added sugar and sodium. The present study aims to quantify the sugar and sodium content of pre-packaged fruit and vegetable-based products that are available in New Zealand supermarkets. METHODS Nutrition Information Panel data were collected from non-frozen, processed fruit and vegetable products in New Zealand supermarkets (including soups, sauces, jams and spreads, pickles, chutneys and dips, and canned/bottled fruit and vegetables) where fruit and/or vegetables were the majority ingredient(s). RESULTS With the exception of canned/bottled vegetables, more than 60% of products contained added sugar. Per serve, the median sugar content was highest in canned/bottled fruit (17.8 g). More than 75% of soups, vegetable-based sauces, pickles/chutneys and canned/bottled vegetables contained added sodium, with soups (722 mg) recording the highest median values per serve. CONCLUSIONS Consumers need to be aware that although they are encouraged to eat a diet high in fruit and vegetables, there may be large quantities of added sugar and sodium in manufactured fruit and vegetable products that can have significant negative impacts on their health. Government health promotion campaigns encouraging the consumption of fruit and vegetables should be careful to target fresh, frozen and home-prepared foods, and work on educating the public about the lower nutritional quality associated with most processed fruit and vegetable products.

Honey – Food or Medicine? The How, Where, and Why of Bioactivity Testing

Honey has been used for its medicinal and health-promoting properties for thousands of years, but only in the last 50–60 years has science caught up and been able to explain many of these beneficial properties. Most honeys exhibit at least some bioactive properties (e.g., antibacterial activity and nutritional benefits); however, others from specific floral sources demonstrate properties that may be of more value. This article discusses some of the more common tests that can used to assess the bioactive potential of honey samples.