Overview
- Medical guidance now converges on changing and washing bed linens about once a week for most sleepers.
- Surveys show a behavior gap, with 40% of Germans changing sheets every three weeks or less despite health advice.
- People who sweat heavily, sleep without nightwear, have allergies or skin issues, share beds with pets, smoke, care for infants, or recover from illness should tighten the schedule to weekly or even more often.
- Germany’s AOK advises replacing nightwear every two to four days, with shorter intervals for heavy sweating.
- Let bedding air out instead of making the bed immediately, and wash at 40°C for routine loads with 60°C recommended for illness, stubborn odors, or occasional machine hygiene.