Palo azul (Eysenhardtia polystachya ), sometimes called “kidney wood,” has a long history of traditional use, particularly in Mexico. Recent interest in the plant stems from preliminary research suggesting benefits for kidney health, blood sugar control, joint pain, and digestion. However, it’s crucial to understand that most studies so far have been conducted on animals, and more human trials are needed to confirm these effects.
Kidney Health and Stone Prevention
Palo azul contains compounds – flavonoids and fatty acids – that may support kidney function. Animal studies suggest these compounds could prevent kidney stone formation by reducing inflammation, neutralizing damaging molecules (reactive oxygen species), and increasing urine flow.
Why this matters: Kidney stones are a painful and increasingly common problem linked to diet and dehydration. While palo azul shows promise, it is not a substitute for established treatments.
Digestive Support: A Potential Alternative?
The plant also contains D-pinitol, a compound that animal research indicates may be as effective as some drugs in managing diarrhea. It appears to delay the onset of diarrhea and reduce fluid buildup in the gut.
Context: Diarrhea is a leading cause of dehydration and illness, particularly in developing countries. If palo azul proves effective in humans, it could offer a natural alternative for relief.
Joint Pain Relief Through Anti-Inflammation
Animal studies suggest that flavonoids in palo azul bark have strong anti-inflammatory properties. This could potentially alleviate joint pain associated with conditions like rheumatoid arthritis by reducing the levels of inflammatory molecules in the body.
The bigger picture: Rheumatoid arthritis affects millions worldwide and often requires long-term medication. Natural compounds with anti-inflammatory effects are actively researched as potential complementary therapies.
Blood Sugar Regulation: A Promising Pathway
Preliminary research suggests palo azul may help stabilize blood sugar levels by protecting cells from damage and reducing the formation of harmful compounds (AGEs) linked to diabetes.
Why this is significant: Diabetes is a global epidemic. Even small improvements in blood sugar control can reduce the risk of long-term complications. However, palo azul is not a cure and should not replace medical treatment.
How to Prepare Palo Azul Tea
Traditionally, palo azul tea is made by simmering 1 ounce (oz) of bark in 1 gallon of spring water for 20–30 minutes until the liquid turns a deep amber color with a blue hue. It has a mild, woody, and subtly sweet flavor.
Caution: Proper preparation is essential. Ensure the bark is strained thoroughly before consumption. Refrigerate leftover tea to preserve its compounds.
Safety and Side Effects: Proceed with Caution
While animal studies suggest palo azul is relatively nontoxic, human research is limited. Always consult with a doctor before using palo azul, especially if you are pregnant, breastfeeding, or taking medications.
Possible side effects include nausea or digestive discomfort; reduce dosage or discontinue use if these occur.
In conclusion: Palo azul shows promising potential for various health benefits, but the evidence is still preliminary. Further human studies are crucial to confirm its efficacy and safety before widespread adoption.
