The belief that a raw potato can treat an infection—specifically drawing out pus or toxins from a boil, splinter, or abscess—is a persistent health question. This traditional remedy involves placing a slice or poultice of potato directly onto the affected skin overnight. This article investigates the scientific validity of this belief by examining the potato’s properties and comparing the practice to modern medical standards.
The Origin of the Folk Belief
The belief in the potato’s healing power is deeply rooted in traditional folk medicine practices spanning centuries. Many cultures have historically used potatoes and other plant materials for various topical ailments. The practice gained traction due to visual evidence that seemed to confirm its efficacy.
When a raw potato slice is placed on the skin, it often appears discolored, turning dark brown or black after several hours. People using this remedy interpret this change as the potato having “drawn out” the infection, toxins, or “sickness” from the body. This observable change reinforces the myth that the potato has absorbed something harmful from the inflamed area.
Scientific Properties of the Potato
Despite the visual evidence of discoloration, no credible scientific evidence suggests that a raw potato possesses antiseptic, antibiotic, or toxin-extracting properties. The browning seen is a purely chemical reaction, not a sign of pathogen removal.
The discoloration is caused by the enzyme polyphenol oxidase, found naturally within the potato’s cells. When the potato is sliced, this enzyme is exposed to oxygen, leading to the rapid oxidation of phenolic compounds. This process results in the formation of dark pigments, which is the same reason sliced apples turn brown.
The potato’s high water content and starch are sometimes cited as drawing agents, but this mechanism is not effective against a bacterial infection. While a potato can absorb water via osmosis, this process is limited to surface moisture. It does not possess the capacity to pull pus or bacteria from deep, localized tissue infections like an abscess. A bacterial infection requires an immune response and, often, targeted medical intervention, which a simple vegetable cannot provide.
Medically Accepted Treatment for Localized Infections
For small, localized skin infections such as boils or mild abscesses, the body can often heal itself with supportive care. Medically accepted home treatment focuses on encouraging natural drainage and maintaining cleanliness. Applying a clean, warm compress to the affected area several times a day is recommended. The moist heat increases blood flow to the site.
This increased circulation helps the boil come to a head and promotes the body’s natural process of breaking down the purulent material. It is important to never squeeze or try to lance a boil or abscess at home, as this can push the infection deeper or spread bacteria. After the infection drains, the area should be gently cleaned with soap and water and covered with a sterile dressing.
If a localized infection is large, painful, or shows signs of spreading, professional medical attention is necessary. Signs like fever, expanding redness, red streaking away from the site, or a lack of improvement after several days suggest a more serious infection. A healthcare provider can perform a sterile incision and drainage procedure, which is the definitive treatment for many abscesses, and prescribe systemic antibiotics if the infection is severe or spreading.