According to relevant research materials, the survival time of hamsters without eating is mainly affected by the following factors:

Basic Survival Time
No food or water at all: Usually survives 3-4 days.
No food but access to water: Can survive about 7 days.
Food stored in cheek pouches: May extend to 5-7 days.
Key Influencing Factors
Age and size differences: Young hamsters have shorter tolerance (1-2 days).
Environmental temperature: High or low temperatures accelerate dehydration and death.
Health status: Sick individuals have significantly shorter survival time.
Risk Warnings
Hypoglycemia may occur after over 24 hours without eating. It is recommended to check promptly for inflamed cheek pouches or moldy food. If accompanied by symptoms like listlessness or messy fur, consider disease factors.
(Note: Actual survival time varies among individuals, and the above data are laboratory observation statistics.)