Journal Articles

Permanent URI for this collectionhttps://mro.massey.ac.nz/handle/10179/7915

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    Adherence to Dietary Guidelines among Women with and without Gestational Diabetes: Evidence from the Growing Up in New Zealand Study
    (MDPI (Basel, Switzerland), 2022-05-21) Lawrence RL; Wall CR; Bloomfield FH; Brunetti A
    Diet is thought to play a role in the development and management of gestational diabetes mellitus (GDM). Dietary guidelines provide practical recommendations for achieving nutrient requirements and mitigating the risk of chronic disease. The aim of this study was to describe the adherence to dietary guidelines by women with and without GDM and determine whether adherence is associated with the development of GDM. Adherence to Ministry of Health food group recommendations was assessed in 5391 pregnant women participating in the Growing Up in New Zealand study. A food frequency questionnaire (FFQ) administered during pregnancy provided dietary data. The presence of GDM was determined using diagnostic coding in clinical data and blood glucose results. A quarter of women did not meet any food group recommendations. There were no significant differences in the number of food group targets met by women with or those without GDM. Meeting food group recommendations was not associated with odds of having GDM in adjusted analyses. This study found adherence to dietary recommendations is poor in both women with and without GDM and no association between adherence to food group recommendations and the development of GDM. Greater support is required to assist women to achieve food and nutrition recommendations.
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    Adherence to Dietary and Lifestyle Guidelines Among Women With a History of Gestational Diabetes Mellitus and the Influence of a Student-Led Dietetic Clinics
    (Wiley Periodicals LLC, Hoboken, USA, 2025-02-23) Illenberger K; Sekula J; Lawrence R
    Women with a history of gestational diabetes mellitus have an increased risk of developing type 2 diabetes. Healthy diet and lifestyle habits may contribute to reducing this risk. This study aimed to describe dietary intake and lifestyle habits of women with a history of gestational diabetes mellitus and determine the impact of nutrition and lifestyle counseling on dietary intake and lifestyle goals. This retrospective cohort study included 32 women with a history of gestational diabetes mellitus 6 months postpartum who attended the student-led nutrition clinic between 01 June 2021 and 31 August 2022. Dietary intake, lifestyle, and physical activity habits were extracted from student dietitians' notes. The mid-p-value McNemar's test was used to determine whether attendance at the student-led dietetic clinic was associated with a change in the proportion of women meeting the guidelines. Fifteen percent (n = 5) of women did not meet any food group recommendations prior to any interventions. Most women (46.8%) engaged in less than the recommended level of physical activity and more than a quarter (28.1%) did not engage in any physical activity at their initial consultation. After attending at least one consultation, a greater proportion of women met recommendations for at least one food group (41.1% vs. 18.7%, p = 0.256) and a greater proportion of women met physical activity guidelines (60% vs. 25%, p = 0.125). In this cohort of postpartum women with a history of gestational diabetes mellitus, adherence to the Ministry of Health Eating and Activity guidelines was poor. Positive changes towards adherence are possible after attendance at a student-led nutrition and dietetic clinic.
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    Dietary patterns influencing the human colonic microbiota from infancy to centenarian age: a narrative review
    (Frontiers Media S A, 2025-06-04) Geniselli da Silva V; Roy NC; Smith NW; Wall C; Mullaney JA; McNabb WC; Benítez-Páez A
    Our dietary choices not only affect our body but also shape the microbial community inhabiting our large intestine. The colonic microbiota strongly influences our physiology, playing a crucial role in both disease prevention and development. Hence, dietary strategies to modulate colonic microbes have gained notable attention. However, most diet-colonic microbiota research has focused on adults, often neglecting other key life stages, such as infancy and older adulthood. In this narrative review, we explore the impact of various dietary patterns on the colonic microbiota from early infancy to centenarian age, aiming to identify age-specific diets promoting health and well-being by nourishing the microbiota. Diversified diets rich in fruits, vegetables, and whole grains, along with daily consumption of fermented foods, and moderate amounts of fish and lean meats (two to four times a week), increase colonic microbial diversity, the abundance of saccharolytic taxa, and the production of beneficial microbial metabolites. Most of the current knowledge of diet-microbiota interactions is limited to studies using fecal samples as a proxy. Future directions in colonic microbiota research include personalized in silico simulations to predict the impact of diets on colonic microbes. Complementary to traditional methodologies, modeling has the potential to reduce the costs of colonic microbiota investigations, accelerate our understanding of diet-microbiota interactions, and contribute to the advancement of personalized nutrition across various life stages.
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    Understanding the current evidence base for the commonly recommended management strategies for recurrent feline idiopathic cystitis: a systematic review
    (Taylor and Francis Group on behalf of the New Zealand Veterinary Association, 2025-03-27) Macleod B; Laven LJ; Laven RA; Hill KE
    Objectives: This systematic review aims to describe and understand the evidence available for commonly recommended management strategies for feline idiopathic cystitis (FIC) to provide guidance for clinicians in their treatment of this condition. A subsequent objective was to identify gaps in the literature and areas where future research may be directed. Methods: A computerised search of three electronic databases (Discover, Scopus and PubMed) was performed. Results were imported into a single EndNote library and duplicates were removed. Remaining records underwent a two-stage screening process with the aim to identify peer-reviewed primary literature on therapeutic strategies for FIC. Studies were categorised according to one of seven management strategies: environmental modification, dietary manipulation, anti-inflammatory drugs, amitriptyline, glycosaminoglycans, prazosin, and intravesical lidocaine. Results: Twenty-two studies were included in the final review, with one study providing evidence in two categories. Two studies assessed environmental manipulation, with results showing encouraging evidence for multimodal environmental modification but little evidence to support the use of feline facial pheromone. Five papers examined dietary manipulation, with good evidence for the use of therapeutic urinary diets, and for increasing the moisture content of a cat’s diet. Anti-inflammatory drugs were the focus of four studies, with none providing evidence to support their use. Four papers indicated that the evidence to support glycosaminoglycans is lacking. The antispasmodic drug prazosin was purported to be useful in one retrospective paper, while three papers comparing it to a placebo showed no evidence for its use. Three studies assessed amitriptyline, with two indicating that short-term use is not supported, and one long-term study suggesting it may be useful in some refractory cases. One study on intravesical instillation of lidocaine concluded that it was not a useful treatment strategy. Conclusions: Multimodal environmental modification to reduce stress/conflict and therapeutic urinary foods (particularly if combined with an increase in moisture content of the diet) currently have the strongest evidence to support their use in managing FIC, and should, together, be considered the primary treatment approach. The evidence for other modalities, is currently insufficient to support their use. The overall lack of high quality studies emphasises the need for clinicians to be critical in their evaluation of the published literature on the management of this perplexing condition.
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    Time in Bed, Sleeping Difficulties, and Nutrition in Pregnant New Zealand Women.
    (MDPI (Basel, Switzerland), 2023-02-23) McDonald BW; Watson PE; Trakada G
    We consider the relationship between time in bed (TIB) and sleeping difficulties with demographic variables and nutrient intakes in the second (T2) and third (T3) trimester of pregnancy. Data were acquired from a volunteer sample of New Zealand pregnant women. In T2 and T3, questionnaires were administered, diets were obtained from one 24 h recall and three weighed food records, and physical activity was measured with the use of three 24 h diaries. In total, 370 women had complete information in T2 and 310 in T3. In both trimesters, TIB was associated with welfare or disability status, marital status and age. In T2, TIB was associated with work, childcare, education and pre-pregnancy alcohol consumption. There were fewer significant lifestyle covariates in T3. In both trimesters, TIB declined with increasing dietary intake, especially water, protein, biotin, potassium, magnesium, calcium, phosphorus and manganese. Adjusted for weight of dietary intake and welfare/disability, TIB declined with increasing nutrient density of B vitamins, saturated fats, potassium, fructose and lactose; and TIB increased with carbohydrate, sucrose and vitamin E. Subjective sleeping difficulties increased with the week of gestation, morning sickness severity, anxiety, dairy and saturated fat intake, and they decreased with fruit, vegetable and monounsaturated fat intake. The study highlights the changing influence of covariates throughout the pregnancy and corroborates several published findings on the relationship of diet and sleep.
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    Exploring the Nutrition-Related Health of the Ageing Population in Fiji: A Narrative Review.
    (SAGE Publications, 2024-10-18) Naliva S; Kruger M; Havea P; Wham C
    Fijis' older population aged 55 years and over makes up 14% of the total population and is expected to reach 20% by 2050. This narrative review aimed to examine the health and nutrition status of the aging population of Fiji and sociodemographic determinants. A search strategy was conducted throughout databases, and gray literature from relevant websites was searched. Due to the limited evidence regarding the nutrition, health, and socio-economic factors that impact the aging population in Fiji the inclusion criteria were broad and included both genders (male and female), all publications up until December 2022, all study designs, and gray literature (government/institutional reports, conference proceedings, guidelines, Act, and Policies) . There was no filter for date applied in the search criteria. Studies that did not meet the search criteria were excluded. 20 documents including published articles were included for analysis and result synthesis. Life expectancy at birth for the Fiji population is 68 years. A significant annual increase in mortality rate from endocrine, nutritional, and metabolic diseases has been observed in women aged 75+ but not older men. Women of low-income status are more at risk than men. However, as most investigations aggregate those ≥18 years, there is a lack of information on older adults (≥65 years) health and nutrition status. To improve the health status of older adults, an understanding of the nutritional status of older adults is warranted, especially concerning lifestyle and sociodemographic determinants.
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    Increasing Evidence That Irritable Bowel Syndrome and Functional Gastrointestinal Disorders Have a Microbial Pathogenesis
    (Frontiers Media S.A., 2020-09-09) Carco C; Young W; Gearry RB; Talley NJ; McNabb WC; Roy NC; Ianiro G
    The human gastrointestinal tract harbors most of the microbial cells inhabiting the body, collectively known as the microbiota. These microbes have several implications for the maintenance of structural integrity of the gastrointestinal mucosal barrier, immunomodulation, metabolism of nutrients, and protection against pathogens. Dysfunctions in these mechanisms are linked to a range of conditions in the gastrointestinal tract, including functional gastrointestinal disorders, ranging from irritable bowel syndrome, to functional constipation and functional diarrhea. Irritable bowel syndrome is characterized by chronic abdominal pain with changes in bowel habit in the absence of morphological changes. Despite the high prevalence of irritable bowel syndrome in the global population, the mechanisms responsible for this condition are poorly understood. Although alterations in the gastrointestinal microbiota, low-grade inflammation and immune activation have been implicated in the pathophysiology of functional gastrointestinal disorders, there is inconsistency between studies and a lack of consensus on what the exact role of the microbiota is, and how changes to it relate to these conditions. The complex interplay between host factors, such as microbial dysbiosis, immune activation, impaired epithelial barrier function and motility, and environmental factors, including diet, will be considered in this narrative review of the pathophysiology of functional gastrointestinal disorders.
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    Gut Microbial Metabolites and Biochemical Pathways Involved in Irritable Bowel Syndrome: Effects of Diet and Nutrition on the Microbiome
    (Elsevier Inc on behalf of the American Society for Nutrition, 2020-05) James SC; Fraser K; Young W; McNabb WC; Roy NC
    The food we consume and its interactions with the host and their gut microbiota affect normal gut function and health. Functional gut disorders (FGDs), including irritable bowel syndrome (IBS), can result from negative effects of these interactions, leading to a reduced quality of life. Certain foods exacerbate or reduce the severity and prevalence of FGD symptoms. IBS can be used as a model of perturbation from normal gut function with which to study the impact of foods and diets on the severity and symptoms of FGDs and understand how critical processes and biochemical mechanisms contribute to this impact. Analyzing the complex interactions between food, host, and microbial metabolites gives insights into the pathways and processes occurring in the gut which contribute to FGDs. The following review is a critical discussion of the literature regarding metabolic pathways and dietary interventions relevant to FGDs. Many metabolites, for example bile acids, SCFAs, vitamins, amino acids, and neurotransmitters, can be altered by dietary intake, and could be valuable for identifying perturbations in metabolic pathways that distinguish a "normal, healthy" gut from a "dysfunctional, unhealthy" gut. Dietary interventions for reducing symptoms of FGDs are becoming more prevalent, but studies investigating the underlying mechanisms linked to host, microbiome, and metabolite interactions are less common. Therefore, we aim to evaluate the recent literature to assist with further progression of research in this field.
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    The Role of Lifestyle and Dietary Factors in the Development of Premature Ovarian Insufficiency
    (MDPI (Basel, Switzerland), 2023-08-11) Shelling AN; Ahmed Nasef N; Dimitriadis, F; Sofikitis N; Sulyok E
    Premature ovarian insufficiency (POI) is a condition that arises from dysfunction or early depletion of the ovarian follicle pool accompanied by an earlier-than-normal loss of fertility in young women. Oxidative stress has been suggested as an important factor in the decline of fertility in women and POI. In this review, we discuss the mechanisms of oxidative stress implicated in ovarian ageing and dysfunction in relation to POI, in particular mitochondrial dysfunction, apoptosis and inflammation. Genetic defects, autoimmunity and chemotherapy, are some of the reviewed hallmarks of POI that can lead to increased oxidative stress. Additionally, we highlight lifestyle factors, including diet, low energy availability and BMI, that can increase the risk of POI. The final section of this review discusses dietary factors associated with POI, including consumption of oily fish, mitochondria nutrient therapy, melatonin, dairy and vitamins that can be targeted as potential interventions, especially for at-risk women and in combination with personalised nutrition. Understanding the impact of lifestyle and its implications for POI and oxidative stress holds great promise in reducing the burden of this condition.
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    Editorial: Recent advances and perspectives on the gastrointestinal microbiota of small ruminants.
    (Frontiers Media S.A., 2024-09-09) Vargas-Bello-Pérez E; Altermann E; Tudisco R; Zhang Q; Puniya AK; Cherdthong A; Knut R
    Recent research on the gastrointestinal (GI) microbiota of small ruminants such as goats and sheep have provided fascinating insights into their microbial ecology and its impact on health and productivity. Some key advances and perspectives in this field relate to microbial diversity and composition, revealing a diverse array of microbial species inhabiting the GI tract of small ruminants. Members of these microbiomes include bacteria, fungi, protozoa, and archaea, each playing unique roles in the nutrient digestion, immune modulation, and overall gut health. It has been demonstrated that the functional capabilities of GI microbiota, include the fermentation of dietary substrates, synthesis of vitamins, and metabolite production (e.g., short-chain fatty acids). These metabolites influence host physiology, including energy metabolism and immune function.