Will body odor worsen during menstruation?
Aug 27, 2025
Source: Cainiu Health
Dr. Zhang Lu
Introduction
During menstruation, female estrogen and progesterone levels fluctuate significantly. These hormonal changes may stimulate increased secretory activity of the apocrine sweat glands in the armpits, leading to greater sweat production. If proper hygiene is not maintained, the increased sweat can result in more noticeable odor due to bacterial breakdown of the sweat components. Particularly during menstruation, when emotional stress and body heat are more common, the perception of this odor may become more pronounced.
Under normal circumstances, some women may experience a worsening of body odor during their menstrual period, while others may see no significant change in symptoms. This is mainly related to hormonal fluctuations during the menstrual cycle and individual physical condition. If concerned, it is recommended to seek medical advice in advance. Detailed analysis is as follows:
During the menstrual period, estrogen and progesterone levels in women's bodies fluctuate significantly. These changes may stimulate increased secretion from the apocrine sweat glands under the armpits, leading to increased perspiration. If sweat is not cleaned promptly, the odor caused by bacterial breakdown of sweat may become more noticeable. Particularly during the menstrual period, if emotional tension or body heat increases, the perception of odor may become more pronounced. Such conditions usually gradually improve after the menstrual period ends and hormone levels return to normal.
If the original body odor symptoms are mild, the apocrine sweat glands are less sensitive to hormonal fluctuations, or if proper underarm hygiene is maintained during the menstrual period, along with frequent changes of loose, breathable clothing to keep the area dry, the odor may not worsen despite hormonal changes. Additionally, some women maintain a stable physical condition during menstruation without significant effects from hormonal fluctuations, so their body odor symptoms remain unchanged without noticeable variation.
During the menstrual period, it is important to keep the underarm area clean and dry, wear cotton and breathable clothing, and avoid strenuous exercise that may cause excessive sweating. If the odor significantly worsens and affects daily life, it is advisable to consult a reputable medical institution for improvement options after the menstrual period ends, rather than attempting unguided treatments during menstruation.
