Waiting 30 days before changing your bed sheets is generally considered to be poor hygiene. While the frequency of changing bed sheets can vary depending on individual preferences and circumstances, it is generally recommended to change them at least once every one to two weeks.
Bed sheets can accumulate sweat, body oils, dead skin cells, and other debris over time. Failing to change them regularly can create an environment that is conducive to the growth of bacteria, dust mites, and other allergens. This can potentially lead to issues such as skin irritation, allergies, and even respiratory problems for individuals who are sensitive or prone to such conditions.
To maintain good hygiene, it is advisable to follow a regular schedule for changing your bed sheets and pillowcases. Additionally, it's worth noting that certain factors like illness, excessive sweating, or environmental conditions may necessitate more frequent changes. Ultimately, it's important to assess your personal circumstances and cleanliness preferences to determine the appropriate frequency for changing your bed sheets.