How Often Should You Wash Your Sheets?
The general recommendation. Wash your sheets once a week.
For people with allergies. Wash them more often.
For people with sensitive skin. Wash them more often.
In hot, humid climates. Wash them more often.
If you sweat a lot. Wash them more often.
If you sleep with pets. Wash them more often.
If you are sick. Wash them after you recover.
The golden rule. When in doubt, wash them.