Can getting a flu vaccine delay your period?
May 10, 2023
Source: Cainiu Health
Dr. Guo Xiheng
Introduction
Getting a flu vaccine generally does not affect menstrual cycle delay. However, in women with particularly sensitive constitutions, it might potentially lead to delayed menstruation. The influenza vaccine is one of the vaccines used to prevent influenza and is a type of inactivated vaccine. Menstruation in women is primarily regulated by the body's estrogen levels, and this vaccine does not cause a reduction in estrogen secretion.
Getting a flu vaccine generally does not affect or delay menstruation, but in women with particularly sensitive constitutions, it might lead to delayed periods. The detailed analysis is as follows:
1. No effect
The influenza vaccine is one of the vaccines commonly used to prevent influenza and belongs to the category of inactivated vaccines. A woman's menstrual cycle is primarily regulated by the body's estrogen levels. This type of vaccine does not reduce estrogen secretion; therefore, it typically does not cause menstrual delay.
2. Possible effect
However, if a woman has a particularly sensitive constitution that reacts adversely to the flu vaccine or if the vaccine temporarily affects estrogen secretion, this may result in delayed menstruation. Other possible symptoms may include fever, facial flushing, and general weakness. These reactions are usually normal and no special treatment or excessive concern is required.
If any discomfort occurs after receiving the flu vaccine, it is important to seek medical evaluation promptly to avoid potential complications or delays in diagnosis and treatment.
