What causes axillary odor?

The main causes of axillary odor (also known as bromhidrosis) include: 1. Genetic factors: Axillary odor is hereditary and classified as an autosomal dominant genetic disorder. When there is a family history of axillary odor, the likelihood of offspring developing it increases. 2. Endocrine factors: After entering puberty, secretion of sex hormones becomes more active, especially increased androgen activity, which promotes increased secretion from the apocrine sweat glands, providing conditions for bacterial decomposition and odor production. 3. Poor lifestyle habits: Poor personal hygiene, such as infrequent bathing and clothing changes, can lead to sweat accumulation in hard-to-clean areas like the armpits, creating a favorable environment for bacterial growth and resulting in odor. 4. Dietary factors: Long-term consumption of spicy, greasy, and heavily seasoned foods may stimulate sweat gland secretion and increase the risk of axillary odor.