
Editorial
Select search scope: search across all journals or within the current journal

Weight-class athletes commonly engage in rapid weight loss (RWL) practices.
Investigate attributed RWL perceptions and thoughts of UK-based Olympic weightlifters.
Participants (n: 39, male: 22, female: 17) were selected from International Weightlifting Federation populations, 85% had previously acutely reduced pre-competition body mass. The ‘Pre-competition weight management practices questionnaire’ featured open-ended questions concerning feelings, mood and thoughts during RWL. Qualitative responses were subsequently analysed using content analysis principles.
Negative thoughts and perceptions were commonly attributed concerning RWL, of which codes: irritation, hunger, fatigue, anxiety and low mood accounted for 72% of the 72 data extracts. Females more frequently attributed codes of anxiety, hunger and low mood.
The prevalence of negative thoughts and perceptions of RWL accord to previous reports within strength-sport athletes. Olympic weightlifting athletes and coaches should contemplate if negative feelings/mood perceived during RWL are a tolerable factor within pre-event preparation to compete in a desired weight class.
Over the past two decades, there has been an increase in the prevalence of psychological conditions, such as depression, anxiety, disordered eating, and body image disturbances. In concert with this trend, there was a substantial rise in the advocacy and practice of restrictive dietary patterns, such as veganism and vegetarianism. These parallel developments suggest a relation between diet and mental health, but to date, research has failed to offer clear answers on whether these associations are causal, coincidental, or more complex than superficial analyses suggest.
Given this context, the purpose of this commentary is to offer a consilient perspective on the role of vegan and vegetarian diets in mental health.
We performed a broad qualitative synthesis of the current literature on diet and mental health from sociologic and psychologic perspectives.
Several empirically supported hypotheses were presented with equivocal support.
The current evidence suggests that if a nutritionally adequate diet is consumed, the avoidance/consumption of meat and other animal foods will have no significant effects on physical and mental health.
Meat consumption has been a common food selection for humans for millennia. Meat is rich in amino acids, delivers vast amounts of nutrients and assists in short term health and hypertrophy. However, meat consumption can induce the activation of mTOR and IGF-1, accelerated aging, vascular constriction, atherosclerosis, heart disease, increased risk of diabetes, systemic inflammatory effects, cancers (including colorectal and prostate cancers), advanced glycation end products, impaired immune function / increased susceptibility to infection via downstream advanced glycation end product accumulation, polycyclic aromatic hydrocarbon ingestion, increased homocysteine levels among many other pathophysiologies. Research papers showing health benefits of meat consumption versus other papers showing the detriment of meat have led to confusion as many cohorts such as bodybuilding, health and wellness groups, carnivore diet practitioners, online social media longevity groups and more are interested in data that exists across the peer reviewed literature, however, few papers offer a super wide view where meat consumption benefits and pitfalls are taken into account.
The need for such a systematic review is high as health enthusiasts incorrectly often quote single data points from papers showing a single benefit from consuming meat. This often leads to a higher consumption of meat. However, not all meat consumption is the same, and not all meat delivers the same benefits or detriments. Therefore, a systematic review of current literature has been performed to extrapolate the data into whether those interested in hypertrophy, short term nutrition and energy, and longevity should consume meat.
A deep analysis of almost one hundred peer reviewed papers and surveys spanning decades of cohorts having a meat-based diet compared to those consuming a plant based diet has been performed. Further analysis on specific side effects and disease has also been performed.
The results of our systematic review show clearly that meat is great for hypertrophy, short term nutrition, short term energy requirements, but a very poor choice when it comes to healthy aging and longevity.
Animal protein is great for building muscle, short term energy, maintaining high levels of nutrients, but a carnivore diet holds too many adverse long term side effects to be considered a staple for a longevity-based diet. The evidence is very strong, that subjects interested in longevity and aging should shift their protein intake away from red and processed meats, and either toward white meats or plant-based sources if longevity is the goal.
Turmeric (
This study examined the influences of different concentration of turmeric rhizome powder supplemented diet on the gene expressions of both anti-ulcer and ulcer biomarkers in indomethacin-induced ulcerated rats.
The study was conducted through prophylactic treatment of test groups with turmeric at different percentage (1%, 2%, 5%, and 10%) for 28 days. Thirty-five rats were randomly divided into seven groups namely A, B, C, D (1%, 2%, 5%, and 10% groups respectively), E (standard drug group (STD)), F (ulcerogenic group) and G (normal control group (CTL)). At the end of 28 days, rats were fasted overnight and ulcer was induced in all the groups except group G by oral administration of 60mg/kg b.w (body weight) of indomethacin. The expression of defensive (Cyclo-oxygenase-1, MUCIN, and Hyme-oxygenase-1) and destructive factors (Pepsin) were then analyzed.
Results showed that consumption of TRPSD at 1–5% increased the gene expression of protective factors when compared with animals in group F. Furthermore, Prophylactic treatment of test groups with TRPSD at 1%–5% significantly suppressed the gene expression of pepsin in comparison with animals in group F. However, TRPSD consumption at 10% down-regulated the gene expression of those protective factors. Similarly, at 10%, pepsin gene expression was not suppressed when compared with animals in group F. Conclusively, TRPSD could be gastro protective at 1%–5%. However, these potentials were abrogated in animals in group D indicating the ulcerogenic potential of turmeric at this concentration (10%) and its capability to enhance ulcerogenic action of indomethacin.
Turmeric rhizome powder (TRP) have anti-ulcerogenic potential and gastro-protective effect when consumed in appropriate concentration. Consumption of TRP at 10% concentration could enhance ulcerogenic action of indomethacin (NSAIDs) thus predisposing to ulcer. Effects of turmeric rhizome powder supplemented diet (TRPSD) on the mRNA expression of protective agents (cyclo-oxygenase-1 (COX-1), mucin, and inducible heme-oxygenase (HO-1)) and destructive factor (pepsin), in indomethacin-induced ulcerated Wistar rats were explored in this paper. These were determined by prophylactic treatment of test groups with turmeric at different levels (1%, 2%, 5%, and 10%) for 28 days. Thirty-five rats were randomly divided into seven groups namely A, B, C, D (1%, 2%, 5%, and 10% groups respectively), E (standard drug group (STD)), F (ulcerogenic group) and G (normal control group (CTL)). The rats were fasted overnight and ulcer was induced in all the groups except group G by oral administration of 60mg/kg b.w (body weight) of indomethacin. The expression of defensive (Cyclo-oxygenase-1, MUCIN, and Hyme-oxygenase-1) and destructive factors (Pepsin) were then analyzed. Results showed that consumption of TRPSD at 1%–5% increased the gene expression of protective factors when compared with animals in group F. Furthermore, Prophylactic treatment of test groups with TRPSD at 1%–5% significantly suppressed the gene expression of pepsin in comparison with animals in group F. However, TRPSD consumption at 10% down-regulated the gene expression of those protective factors. Similarly, at 10%, pepsin gene expression was not suppressed when compared with animals in group F. Conclusively, TRPSD could be gastro protective at 1%–5%. However, these potentials were abrogated in animals in group D indicating the ulcerogenic potential of turmeric at this concentration (10%) and its capability to enhance ulcerogenic action of indomethacin.
Evidence associating plant-based diets with the proposed ‘obsessively healthy eating’ eating disorder, orthorexia nervosa, has mostly focused on females. Diet motivations have seldom been assessed.
To compare orthorexic tendencies between vegans/vegetarians and omnivores of both sexes, and reasons behind food choice with an English-validated Food Choice Questionnaire.
A cross-sectional survey of 444 males and females were recruited via social media, email, and Amazon MTurk; to investigate eating patterns, orthorexic tendencies using the ORTO-15 questionnaire, and eating motivations using the Food Choice Questionnaire.
Over half of the participants were male (53.4%), younger adults (mean ± SD 37.2 ± 11.2 years), and mostly from the United States (89%). Vegan and vegetarian eating habits were reported by 15.8% of people. Vegans/vegetarians had significantly higher orthorexic tendencies than omnivores, and chose food significantly more often for Weight Control, Ethical Concern, Natural Content, and Mood reasons. People with greater orthorexic tendencies (ORTO-15 score<35) chose food significantly more often for Weight Control and Ethical Concern reasons than those with less orthorexic tendencies (ORTO-15 score 35+).
This study's results are in line with the majority of the evidence that shows an association between vegan/vegetarian diets and orthorexic tendencies, but strengthens the evidence base by including more male participants. Additionally, this is the first study to use an English-validated motivation-based questionnaire that explored diet motivators in vegans/vegetarians compared to omnivories, and in those with orthorexic tendencies vs. those without orthorexic tendencies.
This study investigates the effect of a nutrition program applied to patients as per bariatric surgery protocol at the sixth month postoperative. The study also compares and contrasts the postoperative findings with preoperative data.
Twenty severely obese sleeve gastrectomy patients between the ages of 18–65 participated in the study. Energy requirements were calculated as 22 kcal/ideal body weight (kg/day) and protein requirements as 1.5 g/ideal body weight (kg/day). The study evaluates patients’ anthropometric and biochemical measurements, body mass index, waist circumference, fat mass (%), weight loss (%), excess weight loss (%), comorbids, and dietary habits at the third and sixth months preoperative and postoperative. Patients’ daily macro-micronutrient intake was also calculated. The Friedman Test and Cochran's
During the first 6 months postoperative, patients lost 34 kg of weight and 16.7% of fat mass, and their percent excess weight loss was measured at 60.2% (<0.0001). Biochemical measurements of the patients revealed that fasting blood glucose, low-density lipoprotein cholesterol, total cholesterol, triglyceride, and calcium levels, which were above the reference range in the preoperative period, were within this range in the postoperative period (<0.0001). Thirteen out of 21 comorbidities, including type 2 diabetes, hypertension, hyperlipidemia, pulmonary problems, and sleep apnea, improved at different rates in the sixth month postoperative.
Thanks to the nutrition program applied as per bariatric surgery protocol, patients lost weight, and their biochemical measurements and comorbids have improved following sleeve gastrectomy.
Given China's fast-growing aging population, cognitive decline is a leading public health concern. Eggs are an affordable food rich in several shortfall nutrients that may benefit cognitive health.
This study assessed the longitudinal relationship between whole egg consumption and cognition among older adults in China.
Individual-level data of 4737 Chinese adults 55+ years came from the China Health and Nutrition Survey (CHNS) 1997–2006 waves. Daily egg consumption was measured using 3-day 24-h dietary recalls. Cognitive functioning was assessed with immediate and delayed recall of a 10-word list, counting backward from 20, and serial 7 subtraction. Multivariate mixed-effects regressions were performed to estimate the longitudinal associations between daily whole egg consumption and cognitive functioning in older Chinese adults.
Approximately 46% of CHNS participants were whole egg consumers, and their daily intake averaged 47.4 g. The overall cognitive functioning test scores, separate scores for cognitive functioning subdomains, and the prevalence of cognitive impairment at the baseline were modestly higher among whole egg consumers than nonconsumers. However, after adjusting for individual characteristics, multivariate mixed-effects regressions did not find daily whole egg consumption to be associated with cognitive functioning among CHNS participants. By contrast, several demographic and socioeconomic factors, such as age, education attainment, and health insurance coverage, were found to correlate with older Chinese adults’ cognition.
This study has measurement and design limitations. Future research should investigate the causal impact of habitual egg intake on different domains of cognition using experimental designs with an extended follow-up period.
This study, part of a community-based nutrition study, aimed to understand the participating experiences of a one-month health promotion intervention in children and parents. The intervention aimed at prompting breakfast consumption amongst children. The specific intervention strategies consisted of mobile text messaging relating to how to cook nutritious and fast breakfast, breakfast-related cartoons provided for children, and group information sessions relating to breakfast consumption for parents.
This study, a process evaluation, conducted 30 individual semi-structured interviews.
Text messaging may be a feasible delivery modality to promote breakfast consumption in children. The extensive contact intensity or amount of intervention strategies may have an adverse impact on prompting breakfast consumption. Disease- and risk-related educational content has the potential to promote breakfast consumption in children.
Text messaging shows promise in increasing breakfast consumption in children, with careful design of contact intensity of educational intervention strategies warranted in the intervention planning process. Content related to the side-effects of breakfast skipping has the potential to promote breakfast consumption in children. However, future research is required to fully understand the quality and effectiveness of these intervention strategies, employing quantitative methodologies.
The emergence of the Omicron variant in November 2021 appears to have impacted food-related activities and behaviors and caused disruptions in food supply systems. Accordingly, this article aims to explore the effects of the Omicron variant on consumers’ food-related behaviors in Qatar.
This research is based on an online survey performed in Qatar in December 2021 and January 2022. The survey consisted of 23 questions arranged into three sections, including both multiple-choice and one-option items. There were 459 valid responses in total.
The Omicron variant has altered diets and food shopping in Qatar. Indeed, the findings indicated (i) consumers in Qatar are shopping less often and purchasing more each trip; (ii) an increase in food online shopping; (iii) an increase in the use of online applications to buy ready-made food; and (iv) an increase in the consumption of healthy foods, especially immunity-boosting ones. Furthermore, consumers’ awareness and general understanding regarding the virus, its transmission, food safety risks, etc., have evolved. On the one hand, consumers take precautionary measures to protect themselves. On the other hand, they are learning to live with the virus.
This research, along with subsequent ones, will provide the foundation for institutional and governmental readiness in the face of potential shocks, crises, and pandemics. The repercussions of the ongoing conflict in Ukraine on food systems throughout the globe (cf. food prices increase) imply that it's a crucial and pressing issue that needs immediate attention.
Patients and the general audience refer social media platforms, such as YouTube, to learn and apply contemporary dietary methods. It is difficult for users to analyze the correctness and quality of information available on open platforms. Using scientific evaluation, this study assessed the quality, reliability, and content of YouTube videos on ketogenic diet (KD).
Three experienced medical practitioners reviewed and evaluated 95 videos. The quality and reliability of the videos were assessed using the quality criteria for consumer health information and the global quality scale (GQS). Topic modeling and sentiment analysis were employed to determine the dominant themes and polarity of the information.
Three types of publishers (doctors, educational institutions, and influencers) were identified for the study. The mean length of videos posted by doctors was high at 42.24 min. The reliability and quality scores ranging from 0 (low) to 5 (high) had an average of 3.08 ± 1.14 and 3.18 ± 1.18, respectively, for sampled videos. One-way analysis of variance reveals significant differences in DISCERN and GQS scores among doctors, educational institutions, and influencers. Topic discovery identified four themes: keto versus glucose, diabetes, KD food, and major chronic diseases. Sentiment analysis reveals positive content polarity, some content shared by doctors had a neutral sentiment.
Content creators should augment the content by citing medical information and terminology. Viewers relied more on doctors for information related to KD. The aesthetic quality is high for all types of publishers. Publishers could focus on the discovered themes to create more content. Publishers should produce high-quality videos by improving esthetics (to increase engagement), and reliable medical information (to increase impact).
Ovarian cancer is one of the deadliest cancers in women. Improved preventative, diagnostic, and therapeutic strategies are needed. Certain dietary patterns and nutrients such as vitamin D and omega-3 fatty acids are associated with reduced cancer risk, but their effects on ovarian cancer remain to be fully elucidated, and their combined effects have not been explored.
To determine the individual and combined effects of the active vitamin D metabolite, calcitriol, and the omega-3 fatty acid, docosahexaenoic acid, on cell growth, and the abundance of the vitamin D receptor (VDR), proteins that modulate cell cycle progression, and apoptotic markers.
OVCAR4 cells, a model of ovarian cancer, were treated with calcitriol, and docosahexaenoic acid, either alone or in combination. Effects on cell growth were determined by the sulforhodamine B assay. Changes in VDR, the cell cycle promotor c-Myc, the cell cycle inhibitor p27 and cleaved PARP, were determined by Western blotting.
While OVCAR4 cell growth was inhibited by individual treatment with either calcitriol or docosahexaenoic acid, the combined treatment revealed enhanced growth inhibition as compared to either treatment alone. Furthermore, long-term treatment (12 days) yielded stronger growth inhibition at lower concentrations as compared to short-term treatments (3 days). Accompanying this growth inhibition was a decrease in c-Myc, and an increase in p27.
The observed reduction in cell growth mediated by calcitriol and docosahexaenoic acid highlights the need for further research utilizing these nutrients, alone and especially in combination, to support ovarian cancer prevention and treatment.
Surfing is a rapidly growing sport and recreational activity. The previously reported, intermittent high-intensity energetics of surfing place athletes and recreational participants at risk of low energy availability (LEA).
As such, this pioneering study aims to be the first to investigate LEA risk and the second to investigate dietary intake in surfers.
Twenty-one intermediate and advanced surfers (female – 5, male – 16) were recruited to complete an online self-administered questionnaire and 4 consecutive 24-hour food logs to establish LEA risk and asses dietary intake. The Low Energy Availability in Female Questionnaire and Eating Disorder Examination Questionnaire were used to identify at-risk individuals in females and males, respectively, with respective cut-off's of ≥8 and ≥2.3.
Fifty-seven percent were classed as at-risk of LEA (50% and 80% in males and females, respectively). No significant relationship of competitive status, surfing ability and body mass index on risk classification was found. However, a non-significant medium effect of age was observed (p = 0.338, R = 0.549). And 77% of the 70 total analysed food records showed inadequate carbohydrate (CHO) consumption.
In summary, an alarmingly high portion of surfers are at risk of LEA and dietary inadequacy. Future studies should confirm whether surfing organisations need to intervene, by addressing limitations of the present study including a small sample, which was heavily biased away from female and high-level competitors.