Parsley (Petroselinum crispum) has a long history of traditional use as a support for urinary tract and bladder health. In herbal medicine, particularly in European folk traditions, parsley has been used as a mild diuretic—an agent that increases urine production. This property was believed to facilitate the flushing of the bladder and urinary tract, potentially reducing the risk of infections and supporting overall urinary health. Parsley seeds and leaves were often used in teas or infusions for these purposes.

Scientifically, parsley contains compounds such as apiol and myristicin, which are thought to have mild diuretic effects. However, clinical evidence confirming its efficacy or safety for supporting bladder health is limited. Most available scientific studies have been conducted in vitro or on animals, and findings are not sufficient to establish clear benefits in humans. As such, while parsley’s use for bladder support is primarily justified by traditional practice, there is not enough robust scientific validation to strongly support its effectiveness in this domain. Further research is needed to clarify its role and potential benefits for bladder health.