Dietary Diversity among Chinese Residents during the COVID-19 Outbreak and Its Associated Factors.

COVID-19, a Public Health Emergency of International Concern, has imposed enormous challenges on the health system, economy, and food supply and has substantially modified people's lifestyles. This study aimed to (1) explore the dietary diversity during the lockdown time in China and (2) examine factors associated with dietary diversity including socio-economic characteristics, sources for food and food purchases, and specific dietary behaviors responding to COVID-19 and isolation. A cross-sectional questionnaire-based survey was conducted online in March 2020. Multi-stage sampling was used to recruit participants living in Hubei Province and other parts of China. Dietary diversity was assessed using the Household Dietary Diversity Score (HDDS) and clustering analysis was used to categorize people with different propensities of methods for purchasing or obtaining foods. Logistic regression was used to model the associations among HDDS, participants' characteristics, approaches to purchase or obtain food, and behaviors adopted to cope with COVID-19. Results: A total of 1938 participants were included in the analysis. The overall mean HDDS was 9.7 ± 2.1, and the median (25th, 75th) was 10 (8, 12). There were relatively low consumptions of fish, legumes, and miscellaneous foods (e.g., processed food like snacks and beverages). After adjusting for age, family income, and geographic regions, people living in places where laboratory confirmed COVID-19 cases were above 500 (ORadjusted = 0.79, 95%CI 0.65, 0.96), or living in Hubei Province (ORadjusted = 0.60, 95%CI 0.39, 0.93) had a lower HDDS. During isolation time, the most common sources for food and food purchases were in-house storage and in person grocery shopping. More than half of the participants (55.9%) purchased food at least once via online ordering and delivery services. There was no significant difference in HDDS among people with distinct dependences on different ways to obtain or purchase food (i.e., dependence on in-person grocery shopping, dependence on both in-house storage and in-person grocery shopping, or dependence on online food purchasing). We also identified a total of 37.7% participants who consumed certain foods or nutritional supplements to cope with COVID-19, which included vitamin C, probiotics, other dietary supplements, alcohol, and vinegar. People who reported these specific dietary behaviors had a significantly higher HDDS (ORadjusted = 1.23, 95%CI 1.02, 1.45) than those who did not do so. This study revealed an overall good dietary diversity among the studied Chinese residents during the COVID-19 pandemic. However, we observed a lower dietary diversity among people living in areas with a high number of confirmed COVID-19 cases. Online ordering and delivery services were popular and could serve as a feasible method to obtain and purchase food, contributing to ensure diversified diets during the time of lockdown. Certain dietary behaviors associated with COVID-19 were also identified and had significant impacts on HDDS.

[Results of a survey aimed at dietitians-nutritionists on the management of clinical nutrition teams during the COVID-19 pandemic in hospitals in Catalonia]. / Resultados de una encuesta dirigida a dietistas-nutricionistas sobre la gestión de los equipos de nutrición clínica durante la pandemia de COVID-19 en centros hospitalarios de Cataluña.

INTRODUCTION: Introduction: the COVID-19 pandemic has had direct implications for clinical nutrition teams (NT), both at an organizational and healthcare level. Since March 2020, expert recommendations on nutritional intervention for patients with COVID-19 have been available. Objectives: to describe the nutritional intervention that has been carried out in patients with COVID-19, to estimate the presence of clinical dietitians-nutritionists (DN) in hospitals in Catalonia, and to know the organization of NTs. Methods: a cross-sectional study through an online survey directed to clinical DNs at hospitals in Catalonia (March 2021) was made. Results: the surveys of 36 NTs, made up of 104 DNs, have been analysed. A total of 44.44 % of NTs had to interrupt or reduce some of their usual activities during the pandemic. When nutritional screening was used, it was carried out early (24-48 h) in 56.25 % of cases, and the most common tool was the NRS-2002 (66.67 %). In 41.67 % of NTs a specific hospital diet was established, this being generally hyperproteic (89.66 %). Oral nutritional supplementation was systematically prescribed by 41.67 % of NTs, prioritizing hyperproteic (97.14 %) and hypercaloric (74.29 %) formulas. It is estimated that clinical DNs are present in approximately 61.54 % of public acute hospitals in Catalonia. Conclusions: the results reflect the adaptive capacity of NTs, reorganizing and redistributing their usual tasks and establishing infrequent measures to ensure nutritional support.

INTRODUCCIÓN: Introducción: la pandemia por COVID-19 ha tenido implicaciones directas en los equipos de nutrición (EN) clínica a nivel tanto organizativo como asistencial. Desde marzo de 2020 se dispone de recomendaciones de expertos sobre la intervención nutricional en pacientes con COVID-19. Objetivos: describir la intervención nutricional que se ha llevado a cabo en los pacientes con COVID-19, estimar la presencia de dietistas-nutricionistas (DN) clínicos en los hospitales de Cataluña y conocer la organización de los EN. Métodos: estudio transversal realizado a través de una encuesta online dirigida a los DN clínicos de los hospitales de Cataluña (marzo 2021). Resultados: se han analizado las encuestas de 36 EN, formados por 104 DN. El 44,44 % de los EN han tenido que dejar de hacer o reducir alguna de sus actividades habituales durante la pandemia. Cuando se ha empleado el cribado nutricional, este se ha realizado de forma precoz (24-48 h) en el 56,25 % de los casos y la herramienta más común ha sido el NRS-2002 (66,67 %). El 41,67 % de los EN han instaurado una dieta hospitalaria específica, siendo esta generalmente hiperproteica (89,66 %). El 41,67 % de los EN han pautado la suplementación nutricional oral de forma sistemática, priorizando las fórmulas hiperproteicas (97,14 %) e hipercalóricas (74,29 %). Se estima que la figura del DN clínico está presente en aproximadamente el 61,54 % de los hospitales de agudos públicos de Cataluña. Conclusiones: los resultados reflejan la capacidad de adaptación de los EN, reorganizando y redistribuyendo sus tareas habituales e instaurando medidas poco habituales para asegurar el soporte nutricional.

Consumption of Food Supplements during the Three COVID-19 Waves in Poland-Focus on Zinc and Vitamin D.

Food supplements (FS) are a concentrated source of vitamins, minerals, or other ingredients with nutritional or other physiological effects. Due to their easy availability, widespread advertising, and sometimes low price, increased consumption of this group of preparations has been observed. Therefore, the aim of the study was to assess the knowledge and intake of FS during the COVID-19 pandemic in Poland, with particular reference to FS containing zinc and vitamin D. It was noted that both of the above ingredients were used significantly more often by people with higher education (59.0%), with a medical background or related working in the medical field (54.5%), and/or exercising at home (60.1%). Preparations containing vitamin D were used by 22.8% of the respondents in the first wave, 37.6% in the second wave, and 32.9% in the third wave. To sum up, we showed the highest consumption of vitamin and mineral supplements, and preparations containing zinc and vitamin D were taken significantly more often by people with higher medical and related education. This indicates a high awareness of health aspects and the need for preventive measures in these groups.

Dietary recommendations during the Covid-19 pandemic. Statement of the Committee of Human Nutrition Science of the Polish Academy of Sciences.

During the COVID-19 pandemic, care for an adequate diet, well adapted to the body's needs and the current level of physical activity, becomes of particular importance. Many dietary compounds participate in the functioning of the immune system, while vitamins D, C, A (including beta-carotene), E, B6, B12, folic acid, zinc, copper, selenium, iron, amino acids, n-3 and n-6 polyunsaturated fatty acids and intestinal microbiota are crucial in various types of defence processes. There has been no evidence that consumed food and its compounds, including those with pro-/prebiotic properties, play a significant role in preventing SARS-CoV-2 infection or alleviating its course. However, in terms of the nutritional value of food and the prevention of dysbiosis, recommending a varied diet with a high proportion of plant-based foods and an adequate amount of animal-based foods has a sound scientific basis. Malnutrition, underweight and obesity are considered independent and prognostic risk factors of severe SARS-CoV-2 infection, which reduce a patient's chances of survival. Therefore, ensuring good nutritional status, including healthy body weight, is a reasonable approach in the prevention of viral infection SARS-CoV-2 or alleviating its course. The document is accompanied by two catalogues of practical nutritional recommendations during the COVID-19 pandemic, addressed to the general population and children.

Evaluation of dietary supplement, functional food and herbal medicine use by dietitians during the COVID-19 pandemic.

OBJECTIVE: The current study was conducted to evaluate the dietary habits of the dietitians who had a leading role in this regard during the pandemic and their use of dietary supplements, functional food and herbal medicines. DESIGN: A cross-sectional study. An online questionnaire was used as a data collection tool to identify the participants' socio-demographic characteristics, health statuses and dietary habits and their use of dietary supplements, functional foods and herbal medicines. SETTING: Turkey. PARTICIPANTS: The study population was 550 dietitians. RESULTS: In the current study, the participants' average age was 30·6 ± 9·1 years, and most of them (88·2 %) were women. More than half of the participants (88·9 %) thought that adequate and balanced nutrition would positively affect the course of COVID-19. To avoid COVID-19, 94·5 % of the dietitians used dietary supplements, 46·1 % herbal medicines and 34·9 % functional foods during the pandemic. The most commonly used dietary supplement was fish oil (81·9 %), functional food was vegetables and fruits (80·5 %) and the herbal medicine was cinnamon (63·5 %). Women's consumption of functional foods was approximately twice higher compared with men (95 % Cl: 1·048, 4·165; P < 0·05). The findings showed that the longer the dietitians were in their careers, the more functional foods and herbal medicines they used. CONCLUSION: During the pandemic, dietitians' use of foods with protective effects against diseases increased depending on their academic knowledge and experience in nutrition. The findings obtained in the current study suggest that an expert's opinion should be obtained before using dietary supplements and herbal medicines.

Association Between Vitamin D Deficiency and COVID-19 Incidence, Complications, and Mortality in 46 Countries: An Ecological Study.

Each patient's immune defenses play a major role in mitigating the impact (ie, morbidity and mortality) of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus responsible for coronavirus disease 2019 (COVID-19). Vitamin D is an important modulator of the immune system. Although serum 25-hydroxyvitamin D levels can be raised through diet or supplements, most vitamin D in the body is the result of dermal synthesis from ultraviolet radiation. The production of vitamin D in the skin, however, can be limited by latitude, skin-covering clothes, the use of sunblock, and skin pigmentation. Vitamin D deficiency affects a high percentage of the world population. Serum 25-hydroxyvitamin D levels are suboptimal, not only in specific risk groups but also in adults from many countries. Low vitamin D levels, therefore, represent a risk factor for several different pathologies, including SAR-CoV-2. This study used an ecological design to assess the association between vitamin D deficiency and COVID-19 incidence, complications, and mortality across 46 countries. All data were obtained from published sources. The results of the study suggest an association at the population level between the prevalence of vitamin D deficiency and the risk of being infected with COVID-19, severity of the disease, and risk of dying from it.

Letter to the editor: Study Summary - Randomized Control Trial of Omega-3 Fatty Acid Supplementation for the Treatment of COVID-19 Related Olfactory Dysfunction.

OBJECTIVES: To evaluate a therapeutic role for omega-3 fatty acid supplementation in the treatment of olfactory dysfunction associated with COVID-19 infection TRIAL DESIGN: Randomized, double-blinded, placebo-controlled trial PARTICIPANTS: Eligible patients are adults with self-reported new-onset olfactory dysfunction of any duration associated with laboratory-confirmed or clinically suspected COVID-19 patients. Exclusion criteria include patients with pre-existing olfactory dysfunction, history of chronic rhinosinusitis or history of sinus surgery, current use of nasal steroid sprays or omega-3 supplementation, fish allergy, or inability to provide informed consent for any reason. The trial is conducted at Mount Sinai Hospital INTERVENTION AND COMPARATOR: The intervention group will receive 2000 mg daily of omega-3 supplementation in the form of two "Fish Oil, Ultra Omega-3" capsules (product of Pharmavite®) daily. The comparator group will take 2 placebo capsules of identical size, shape, and odor daily for 6 weeks. MAIN OUTCOMES: Each subject will take a Brief Smell Identification Test at study enrolment and completion after 6 weeks. The primary outcome will be change in Brief Smell Identification Test over the 6-week period. RANDOMISATION: Patients will be randomized by the Investigational Drug Pharmacy at the Icahn School of Medicine at Sinai via a computer-generated sequence in a 1:1 allocation to treatment or control arms. BLINDING (MASKING): Both participants and researchers will be blinded. NUMBERS TO BE RANDOMISED (SAMPLE SIZE): There will be 88 participants randomized to each group. A total of 176 participants will be randomized. TRIAL STATUS: Protocol Version 1, 8/3/2020 Recruitment is ongoing, started 8/5/2020 with estimated completion 11/30/2020. TRIAL REGISTRATION: The trial is registered on ClinicalTrials.gov with Protocol Identifier: NCT04495816 . TRIAL REGISTRATION: ClinicalTrials.gov, NCT04495816 . Registered 3 August 2020 FULL PROTOCOL: The full protocol is attached as an additional file, accessible from the Trials website (Additional file 1).

Do Low Vitamin D Levels Increase COVID-19 Risk?

Two recent studies arrive at different conclusions.

Vitamin D supplementation to prevent COVID-19 in patients with COPD: a research perspective.

There is increased evidence that the massive release of pro-inflammatory cytokines leading to the cytokine storm syndrome shapes the evolution of COVID-19 and is responsible of the severity of COVID-19 in some patients. A recent review argued that vitamin D deficiency could have increased the COVID-19 outbreak and suggested vitamin D supplementation as a preventive action. In fact, many factors seem to be correlated both to low vitamin D levels and the importance of COVID-19 spreading and severity. It is also important to highlight that the lockdown, implemented in many countries, prevents people to go out and then increases the risk of vitamin D deficiency. COPD patients are particularly at risk to have low levels of vitamin D due to multiple risk factors. COPD may generate a systemic inflammatory process responsible of secondary extra-pulmonary impairments. Vitamin D deficiency could sustain and aggravate the systemic inflammation associated to COPD. Reports have also shown that vitamin D deficiency was associated to exacerbations and hospital admissions, as well as lung function. Recent research showed that vitamin D supplementation significantly reduced COPD exacerbations. Although vitamin D deficiency was not proved to be neither a risk factor of COVID-19, nor a determinant of its severity, vitamin D supplementation represents a preventive perspective that needs to be further studied.