Recovery from COVID-19 was associated with altered appetite characteristics, particularly fullness and taste, but unhealthy dietary behaviors were prevalent among both recovered and COVID-free young adults.
Key Findings
Results
Significant differences in fullness and taste were observed between COVID-19 recovered individuals and COVID-free individuals, while hunger did not differ significantly between groups.
Fullness differed significantly between groups (P = .044)
Taste differed significantly between groups (P < .001)
Hunger did not differ significantly between groups
COVID-19 recovery status was significantly associated with appetite outcomes overall (P < .001)
Results
Eating more food than planned differed significantly between COVID-19 recovered and COVID-free groups.
The difference in eating more food than planned was statistically significant (P = .004)
This was one of the dietary behavior variables assessed via online questionnaire
Both groups reported common unhealthy dietary behaviors overall
Results
Dietary supplement use varied significantly between recovered and COVID-free participants.
Supplement use differed significantly between groups (P = .022)
8.6% of participants reported always using supplements
22.2% reported sometimes using supplements
53.2% reported never using supplements
Results
High consumption of junk food and soft drinks and low fruit intake were reported in both COVID-19 recovered and COVID-free groups.
Unhealthy dietary behaviors were common in both groups regardless of COVID-19 recovery status
Both groups reported high junk food consumption, high soft drink consumption, and low fruit intake
These findings highlight the need for targeted nutritional interventions and public health strategies for young adults broadly
Methods
The study sample consisted of 805 participants, with a majority being female and relatively young.
Total sample: 805 participants
386 had recovered from COVID-19 and 419 were COVID-free
88.3% of participants were female
Mean age was 28.60 ± 11.03 years
Data were collected in January 2022 via an online questionnaire assessing sociodemographic data, medical history, appetite measures, and dietary behaviors
What This Means
This research examined whether recovering from COVID-19 affects how people experience appetite and what they eat compared to people who were never infected. Using an online survey completed in January 2022, researchers compared 386 people who had recovered from COVID-19 to 419 people who had never been infected. The study found that COVID-19 recovery was linked to changes in feelings of fullness and taste perception, while hunger levels did not differ meaningfully between the two groups. Recovered individuals also differed from COVID-free individuals in their tendency to eat more food than planned and in their use of dietary supplements.
Despite these differences related to COVID-19, the study also found that unhealthy eating habits — such as high consumption of junk food and soft drinks and low fruit intake — were common in both groups. This suggests that poor dietary patterns among young adults are a widespread issue not exclusively tied to COVID-19 infection.
This research suggests that people recovering from COVID-19 may experience lasting changes in how their body signals fullness and how they perceive taste, which could affect their eating behaviors during recovery. At the same time, the finding that both recovered and never-infected individuals showed unhealthy dietary habits points to a broader need for nutritional education and public health programs targeting young adults, particularly in the post-pandemic period.
Check Your Own Numbers
Upload your bloodwork. We'll cross-reference your results against this study and 4,700 others.
Alzaben A, Alhashem A, Albawardi A, Bin-Saleem A, Alfawaz D, Alnuwisser R, et al.. (2026). Does COVID-19 infection change appetite and dietary habits?. Medicine. https://doi.org/10.1097/MD.0000000000050383