Research

Adherence

Pandemic-related lifestyle disruption is bidirectional and associated with greater weight loss in individuals who had less healthy pre-pandemic behaviors, while those with healthy pre-pandemic behaviors showed minimal change.

If you had unhealthy habits before the pandemic, the disruption of routine might have actually helped you improve your diet and lose weight. This suggests that for some, breaking old routines can be an opportunity to adopt healthier ones, rather than a cause of decline.

ModerateQualifiesMEDIUM confidence
Individuals most adherent to less healthy pre-pandemic health behaviours improved their diet quality and weight compared with those reporting healthier pre-pandemic behaviours, irrespective of relative deprivation; therefore, for a proportion of the population, the pandemic may have provided an impetus to improve health behaviours.
Mohsen Mazidi et al. · Nature Food · 2021

Why this rating

Large sample size (n=896,286) and longitudinal design, but relies on self-reported data and observational associations rather than controlled intervention.

Source

Diet and lifestyle behaviour disruption related to the pandemic was varied and bidirectional among US and UK adults participating in the ZOE COVID Study

Mohsen Mazidi et al. · Nature Food · 2021

DOI 10.1038/s43016-021-00398-3

cohort · n=896286Cited 26×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →