Within the last decades, plant-based diets have received increasing interest for their potential benefits to human and environmental health. The concept of plant-based diet, however, varies widely in ...its definition. Current definitions range from the exclusion of all animal products to diets that include meat, fish, and dairy in varying quantities. Therefore, the main objectives of this review were twofold: (a) to investigate how researchers use the term plant-based diet in nutrition intervention studies and (b) what types of food a plant-based diet may include. Searching two databases, we found that the term "plant-based diet" evokes varying ideas to researchers and clinicians. Fifty percent of the retrieved studies that included a plant-based dietary intervention completely proscribed animal products and used the term plant-based diet interchangeably with a vegan diet. In contrast, an ~33% of trials included dairy products and 20% of dietary interventions emphasized a semi-vegetarian dietary pattern. Based on specific examples, we point out how the usage of the umbrella term "plant-based diet" may cause significant ambiguity. We often encountered incomplete descriptions of plant-based dietary interventions, which makes comparison and reproducibility of studies difficult. As a consequence, we urge others to use the term "plant-based diet" only in conjunction with a detailed dietary description. To facilitate this process, we provide a template of a standardized plant-based intervention reporting checklist. Finally, the present review also highlights the urgent need for a consensus definition of the term plant-based diet and its content.
Abstract
Background
Fiber, potassium and calcium are nutrients of public health concern and their intakes in the United States are alarmingly low. The usage of nutrition facts labels has been ...reported to increase the odds for dietary reference intake of fiber in some studies. The overall evidence, however, is mixed, as some studies suggested that nutrition facts panels have little to no effect on average measures of diet quality. Here, we investigated whether the usage of nutrition facts labels was associated with meeting U.S. intake recommendations for three nutrients of public health concern: fiber, potassium and calcium.
Methods
We used cross-sectional multistage, stratified, clustered and probability sampling design data from the U.S. National Health and Nutrition Examination Surveys 2017–2020 cycle. The sample included 5,416 individuals aged 20 years or older, which may be extrapolated to represent 146,841,866 US Americans. Nutrient intakes were compared among individuals reading nutrition facts panels “frequently”, “sometimes” or “rarely” using applied survey data analyses techniques (including multivariate logistic regression and marginsplots).
Results
We observed substantial sociodemographic differences between the three groups. Frequent readers were significantly more likely to be female and had higher educational levels. On average, they were also significantly older as compared to rare readers. Fiber intake in g/d was highest in frequent readers (17.09) and lowest in rare readers (14.64). The proportion of participants that met dietary fiber intake recommendations was almost four times higher in the frequent readers group (12.69%) as compared to the rare readers group (3.69%). In a bivariate logistic regression model, frequent label reading significantly increased the odds for meeting the fiber recommendations in Dietary Guidelines for Americans (OR: 2.15,
p
< 0.001). Rarely reading labels decreased the odds (OR: 0.57,
p
= 0.003). These odds remained essentially unchanged after adjusting for sociodemographic covariates, diabetes status and body mass index (OR: 1.84,
p
= 0.004; and OR: 0.62,
p
= 0.022).
Conclusions
Nutrition facts panel reading associates with fiber intake. Our findings have potential implications for public health nutrition strategies that may center around educational work.
The childhood obesity pandemic has emerged as an important public health problem in many countries. Obese children are likely to become obese adults, and adult obesity is associated with an increased ...risk of morbidity. Therefore, controlling the childhood obesity epidemic has become a top public health priority worldwide. The current coronavirus disease 2019 (COVID-19) pandemic may significantly impede this important mission and constitute an unprecedented tragedy in the global battle against childhood obesity. This manuscript presents evidence that the COVID-19 pandemic will aggravate the childhood obesity epidemic and lead to significant weight gain in school children by creating an unprecedented obesogenic environment. Within the last few months, many countries took uncompromising measures in response to the COVID-19 pandemic, including school closures and quarantine. While these steps are often necessary to ensure infection control, they may have a significant negative effect on children's mental and physical health. Physical, nutritional, and psychosocial factors that promote obesity in children during this special situation complementarily contribute to an unprecedented obesogenic environment. Large-scale quarantine and home confinement will impose new and unfamiliar stressors on children, thereby worsening the childhood obesity epidemic. Most importantly, adverse childhood events resulting from a predicted increase in domestic violence within the next few months will significantly contribute to this concern. The scenario presented in this review is of paramount public health importance and must be considered during future pandemic planning. Involved stakeholders, including governments, schools, and families, must make all possible efforts to minimize the impact of the COVID-19 epidemic on childhood obesity.
A reliable diet quality (DQ) assessment is critical to empower individuals to improve their dietary choices. Controversies persist as to whether self-perceived DQ is accurate and correlated with ...actual DQ as assessed by validated nutrient intake indexes. We used National Health and Nutrition Examination Surveys data to examine whether a higher self-perceived DQ was positively associated with a more optimal nutrient intake as reflected by the Food Nutrient Index (FNI) and Diet Quality Score (DQS). Comparative analyses were performed for three self-perceived DQ groups: (I) "excellent or very good" DQ, (II) "good or fair" DQ, and (III) "poor" DQ. The FNI and DQS differed substantially across groups and sexes. FNI scores ranged from 65 to 69 in participants with a self-reported excellent or very good DQ, whereas participants with a self-perceived poor DQ scored significantly lower (53-59). We also observed age- and sex-specific patterns, with the lowest overall FNI scores found in males aged 18-30 years and females aged 31-50 years. DQ intergroup differences were more pronounced in females than in males. Our findings suggest that higher self-perceived DQ is associated with a more optimal nutrient intake and indicate potential helpfulness of self-perceived DQ as a quick and still underexplored indicator with intrinsic limitations.
International medical electives are an important and popular component of the academic curriculum in many medical schools and universities worldwide. The purpose of abroad electives is to provide ...medical students with an opportunity to gain a better understanding of education and healthcare in an international context. The COVID-19 pandemic, however, has substantially changed the international elective landscape. Travel restrictions, closures of international elective programs and the expansion of virtual methods for education caused a widespread disruption to abroad electives. A comprehensive analysis with regard to other consequences for abroad electives, however, has not been done before. Thus, we sought to a) summarize the current transformation of the international medical elective and b) to address potential challenges for post-pandemic international medical electives.
The methodology employed is a multidisciplinary narrative review of the published and grey literature on international electives during the last two years of the COVID-19 pandemic.
Students worldwide had electives postponed or canceled. Apart from evident immediate pandemic-related consequences (such as the substantial decline in global electives and impaired elective research opportunities for educators), there are other several problems that have received little attention during the last two years. These include challenges in the elective application process, poorly-understood consequences for host institutions, and growing global (ethical) disparities that are likely to increase once elective programs will gradually re-open. There is ample evidence that the post-pandemic elective landscape will be characterized by increasing elective fees, and a more competitive seat-to-applicant ratio. Ethical problems for international electives arising from an unequal global vaccine distribution will pose an additional challenge to students and elective coordinators alike.
The COVID-19 pandemic transformed the international medical elective landscape in an unprecedented way, and future generations of medical students will face a series of additional challenges when applying for global medical electives.
In recent decades, China has quickly transformed itself into a modern, urban, technological and economic powerhouse. China's medical education system is internationalizing and attracting a ...considerable number of foreign students seeking medical degrees and other clinical experience, such as observerships, in China. Although the majority of international students in China come from low- and middle income countries, China's rise towards the world's largest medical education system also offers new opportunities for stronger cooperation with European countries. Both sides maintain tight economic ties, and China's rise is also attracting more and more medial students for short-term clinical electives from the German-speaking countries. Such clinical electives are pertinent to global health education in a globalized world, and allow students to immerse in foreign healthcare systems for a short period. Notably, reasons for (and barriers to) electives in China are largely unexplored. To address this gap, we reviewed 4 popular German elective report databases and extrapolated key characteristics of electives in China undertaken by German-speaking medical student. N = 40 elective testimonies were analyzed with regard to students' elective experience, elective barriers and organizational aspects. The vast majority of students reported an elective in Shanghai (n = 29, 72.50%). More than 70% of students applied directly to an elective program for foreign students, whereas less than 25% applied through a bilateral exchange program. Frequently cited positive aspects of electives in China included the Chinese hospitality and the regular high-quality teaching in English for international students. Notably, almost half of student reported some kind of difficulties during their elective (n = 18, 45%), including language barriers (n = 6), administrative issues (n = 5) and visa problems (n = 2). Our data suggest that international electives in China were overall well-rated by German-speaking students. The combination of structured clinical elective programs with English supervision and the opportunity to learn more about the Chinese culture apparently attracted said students in the past 2 decades.
The capability of any food to alter net endogenous acid or base production can be estimated using the potential renal acid load (PRAL) estimation method. The PRAL of edible mushrooms has been rarely ...examined; thus a quantification study of n = 37 edible mushroom species was performed. Results revealed a heterogeneous picture: although the most commonly consumed mushrooms (e.g., Agaricus bisporus, Lentinula edodes, and Pleurotus ostreatus (white)) have alkalizing properties, several acidifying species (Volvariella volvacea, Pleurotus flabellatus) were identified, which may be attributable to their high phosphorus content.
The potential renal acid load (PRAL) describes the capacity of a food to produce acid or base in the human body. The long-term consumption of high-PRAL diets induces a chronic low-grade metabolic ...acidosis state that has been associated with inflammation and impaired kidney function. PRAL tables are available to help individuals in selecting low-PRAL foods. However, these tables do not cover novel or uncommon foods in Western societies. Entomophagy - the practice of eating insects is an emerging trend in the Western world with unclear health consequences from an acid-base perspective. Here, we hypothesized that the consumption of insects is associated with a high PRAL, and analyzed the PRAL values of n = 39 commonly consumed edible insects. Our results suggest that the majority of edible insects have very high PRAL values (of up to 43.62 mEq/100 g), indicating strong acidifying properties and likely resulting in acid retention. PRAL values of edible insects rank well above the PRAL values of other high-protein foods, including legumes, pork and beef. PRAL was moderately correlated with the protein content (r = 0.42) and phosphorus content (r = 0.50) of the examined edible insects. Our data point to a potential health concern when regularly consuming edible insects.
International medical electives are an essential part of medical education and popular among medical students. During the COVID-19 pandemic, however, many students had assistantship placements ...postponed and electives cancelled. Educational institutions switched face-to-face campus-based teaching to virtual platforms. Although it is conceivable that international medical electives were particularly affected by this development, numerical data on this phenomenon is yet scarce. To investigate how the COVID-19 pandemic influenced the clinical elective behavior of German-speaking medical students, we systematically analyzed two large German online databases (Famulatur-Ranking and PJ-Ranking) cataloging medical elective experience testimonies. The COVID-19 pandemic substantially reduced the number of German medical students undertaking abroad medical electives. Between 2018 and 2020, a total of 10,976 reports were uploaded to both databases. We observed a notable decline in abroad elective reports in 2020. Prior to the COVID-19 pandemic, almost 5% of reports uploaded to "PJ-ranking" covered an international medical elective. This number dropped to 1.68% in 2020. Analyzing "Famulaturranking", we observed a comparable phenomenon. While 4.74% of reports in 2019 covered an international elective, the number dropped to 2.02% in 2020. The long-term consequences of this phenomenon will be subject to future research.
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