Experts Debunk Urine as Remedy for Jellyfish Stings on Israeli Beaches
Translated & summarized from Globes by baba
Shahar Lotan debunks the common myth that urine can treat jellyfish stings on Israeli beaches, explaining it worsens the injury. The jellyfish species Rhopilema nomadica, common in the Mediterranean, injects venom through microscopic cells triggered by changes in salinity. Applying urine or freshwater causes more venom release, while vinegar is ineffective against this species. The recommended treatment is rinsing with seawater and seeking medical help if needed.
The story in 6 lines · by baba
- Urine worsens jellyfish stings by triggering more venom release from nematocysts.
- The common Mediterranean jellyfish Rhopilema nomadica migrated via the Suez Canal.
- Vinegar, effective elsewhere, does not neutralize venom from this jellyfish species.
- Rinsing with seawater and avoiding rubbing is the advised treatment.
- The urine myth persists due to semi-scientific intuition and popular culture influence.
- Medical attention is necessary for severe allergic reactions to stings.
Shahar Lotan, an economic and strategic researcher and former intelligence officer, addresses a widespread myth about treating jellyfish stings in Israel. Many beachgoers experiencing the painful sting of the common jellyfish species Rhopilema nomadica, which migrated from the Red Sea to the Mediterranean via the Suez Canal, often resort to applying urine to the affected area. This practice, popularized globally and reinforced by media such as the 1990s TV show "Friends," is believed to neutralize the jellyfish venom due to urine's ammonia content and acidity.
However, Lotan explains that this folk remedy is not only ineffective but harmful. The sting occurs through microscopic nematocysts that inject venom when triggered by changes in salinity or pressure. Applying urine, which is mostly water but not seawater, causes these cells to rupture and release more venom, worsening the injury. Similarly, other non-seawater liquids like freshwater or alcohol have the same adverse effect.
Regarding vinegar, which is used in some parts of the world, especially Australia, to treat dangerous jellyfish stings, Israeli studies show that the venom mechanism of Rhopilema nomadica is resistant to acidic environments, making vinegar ineffective and not recommended.
The recommended treatment is to rinse the sting area with seawater to remove untriggered nematocysts, avoid rubbing the wound, and seek medical attention if severe allergic reactions occur. Lotan suggests the persistence of the urine myth stems from a mix of embarrassment, improvisation, and semi-scientific intuition, combined with the human desire for an immediate remedy during sudden pain.
In conclusion, while jellyfish stings are a common summer hazard on Israeli shores, the best response is simple and scientifically supported: use seawater rinses and professional medical care rather than folk remedies like urine or vinegar.