Observational studyThe American journal of clinical nutrition2021
Diet and physical activity during the coronavirus disease 2019 (COVID-19) lockdown (March-May 2020): results from the French NutriNet-Santé cohort study.
Observational study in The American journal of clinical nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03335644 (The NutriNet-Santé Study. A Web-based Prospective Cohort Study of the Relationship Between Nutrition and Health and of Dietary Patterns and Nutritional Status Predictors), which is not on this map. Cited by 265 papers, 6 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The NutriNet-Santé Study. A Web-based Prospective Cohort Study of the Relationship Between Nutrition and Health and of Dietary Patterns and Nutritional Status Predictors
Who cites it
265 citing papers in PubMed, 6 syntheses or guidelines pooled it.
- Impact of COVID-19 lockdown on smoking and vaping: systematic review and meta-analysis.Public health · 2023Pooled it
- The Impact of Lockdowns on Caffeine Consumption: A Systematic Review of the Evidence.International journal of environmental research and public health · 2022Pooled it
- Impact of Nationwide Lockdowns Resulting from the First Wave of the COVID-19 Pandemic on Food Intake, Eating Behaviors, and Diet Quality: A Systematic Review.Advances in nutrition (Bethesda, Md.) · 2022Pooled it
- Systematic review of the effects of pandemic confinements on body weight and their determinants.The British journal of nutrition · 2022Pooled it
- Eating Behaviour Changes during the COVID-19 Pandemic: A Systematic Review of Longitudinal Studies.International journal of environmental research and public health · 2021Pooled it
- Adherence to the Mediterranean Diet during the COVID-19 national lockdowns: a systematic review of observational studies.Acta bio-medica : Atenei Parmensis · 2021Pooled it
- Impact of a Mindfulness Mobile Application on Weight Loss and Eating Behavior in People with Metabolic Syndrome: a Pilot Randomized Controlled Trial.International journal of behavioral medicine · 2024Trial
- Individually tailored nutritional guidance improved dietary intake of older family caregivers: a randomized controlled trial.European journal of nutrition · 2022Trial
- Analysis of Association between Adolescents' Food Habits and Body Mass Change in a Population-Based Sample: Diet and Activity of Youth during COVID-19 (DAY-19) Study.International journal of environmental research and public health · 2022Trial
- Longitudinal changes in physical activity during and after the first national lockdown due to the COVID-19 pandemic in England.Scientific reports · 2021Trial
- Population trends in dietary patterns in Spain before, during and after the COVID-19 pandemic.Scientific reports · 2026Article
- Different associations of stay-at-home exposure with changes in body mass index and cardiometabolic factors depending on occupational physical activity: a longitudinal quasi-experimental design.Journal of occupational health · 2026Article
- A prospective observational study of lifestyle behaviors and biomarkers to promote cardiometabolic health in healthcare workers during the COVID-19 pandemic.Frontiers in molecular biosciences · 2026Article
- Life-long coping patterns and bio-psycho-social predictors of individual responses to the COVID-19 pandemic-protocol of the Rostock Longitudinal Study (ninth wave).Frontiers in public health · 2026Observational
- COVID-19, sense of control, and the rise of addictive behaviors: a study in Poland.Postepy psychiatrii neurologii · 2025Article
- Factors associated with individual-level changes in BMI as a result of COVID-19 in the general- and migrant-origin populations in Finland.Global health promotion · 2025Article
- Food Preservatives and the Rising Tide of Early-Onset Colorectal Cancer: Mechanisms, Controversies, and Emerging Innovations.Foods (Basel, Switzerland) · 2025Review
- Article
- Nutritional Risk Factors Model of Community-Dwelling Older People in Poland-Pilot Study.Nutrients · 2025Article
- Changes in food behaviours during the first COVID-19 pandemic lockdown in Australia.Nutrition & dietetics : the journal of the Dietitians Association of Australia · 2025Article
205 more citing papers are in PubMed but not listed here.
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Authors and funding
20 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSince December 2019, coronavirus disease 2019 (COVID-19) has been spreading steadily, resulting in overwhelmed health-care systems and numerous deaths worldwide. To counter these outcomes, many countries, including France, put in place strict lockdown measures, requiring the temporary closure of all but essential places and causing an unprecedented disruption of daily life.
objectivesOur objective was to explore potential changes in dietary intake, physical activity, body weight, and food supply during the COVID-19 lockdown and how these differed according to individual characteristics.
methodsThe analyses included 37,252 adults from the French web-based NutriNet-Santé cohort who completed lockdown-specific questionnaires in April-May 2020. Nutrition-related changes and their sociodemographic, lifestyle, and health-status correlates were investigated using multivariable logistic regression models. Clusters of participants were defined using an ascending hierarchical classification of change profiles derived from multiple correspondence analyses.
resultsDuring the lockdown, trends of unfavorable changes were observed: decreased physical activity (reported by 53% of the participants), increased sedentary time (reported by 63%), increased snacking, decreased consumption of fresh food (especially fruit and fish), and increased consumption of sweets, cookies, and cakes. Yet, the opposite trends were also observed: increased home cooking (reported by 40%) and increased physical activity (reported by 19%). Additionally, 35% of the participants gained weight (mean weight gain in these individuals, 1.8 kg ± SD 1.3 kg) and 23% lost weight (2 kg ± SD 1.4 kg weight loss). All of these trends displayed associations with various individual characteristics.
conclusionsThese results suggest that nutrition-related changes occurred during the lockdown in both unfavorable and favorable directions. The observed unfavorable changes should be considered in the event of a future lockdown, and should also be monitored to prevent an increase in the nutrition-related burden of disease, should these diet/physical activity changes be maintained in the long run. Understanding the favorable changes may help extend them on a broader scale. This trial was registered at clinicaltrials.gov as NCT03335644.
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