Is lemongrass tea good for kidneys? This question becomes increasingly important as more people turn to herbal remedies for health benefits. Lemongrass (Cymbopogon citratus) has been extensively consumed worldwide for more than 2000 years, and many believe it offers numerous health advantages, including potential benefits for kidney function.
Despite its popularity, the relationship between lemongrass tea and kidney health is more complex than it might seem. While this aromatic perennial grass is rich in nutrients—containing proteins, essential minerals, and vitamins A, C, and E—research shows some concerning effects on kidney function. Studies involving adults aged 18 to 35 years have found that eGFR (estimated glomerular filtration rate) significantly decreased in both male and female subjects after 30 days of lemongrass consumption.
In this article, we’ll examine what science really tells us about lemongrass tea and kidney health. We’ll explore its nutritional profile, analyze clinical findings, and help you understand when this herbal tea might be beneficial or potentially harmful. Unlike many herbal supplements that lack proper regulation, we want to provide you with evidence-based information to make informed decisions about including lemongrass tea in your wellness routine.
What is lemongrass tea and why is it popular?
Lemongrass tea has surged in popularity as a refreshing herbal beverage made from the stalks and leaves of the Cymbopogon citratus plant. With its distinctive citrusy aroma and flavor without the tartness of actual lemons, this tropical grass native to Southeast Asia has become a staple in both traditional medicine and modern wellness routines.
Nutritional and phytochemical profile
This aromatic herb packs an impressive nutritional punch. Lemongrass tea contains vitamin A, vitamin C, and five B vitamins, alongside essential minerals such as magnesium, calcium, copper, and manganese. It’s also rich in antioxidants that help fight free radicals in the body that may cause disease.
The phytochemical composition of lemongrass is equally remarkable. It contains several antioxidants of note:
Chlorogenic acid
Isoorientin
Swertiajaponin
Furthermore, lemongrass is abundant in essential oils containing compounds like citral, which makes up 40-62% of the oil and exhibits antimicrobial properties. Additional beneficial compounds include flavonoids such as luteolin, quercetin, kaempferol, and apigenin, which contribute to its numerous health benefits.
Traditional uses and modern popularity
Throughout history, lemongrass has been valued across multiple cultures. In countries like Thailand and Vietnam, it serves as both a culinary herb and medicinal plant. Traditionally, it has been used as a folk remedy to promote sleep, relieve pain, boost immunity, and address digestive problems.
Presently, lemongrass tea’s popularity stems from its versatility and perceived health benefits. As a caffeine-free alternative to traditional teas, it appeals to those sensitive to stimulants. Additionally, its refreshing taste makes it an excellent substitute for sugar-sweetened beverages.
Common forms of consumption
The most common way to enjoy lemongrass is as a tea. To prepare a perfect cup:
Cut 1-2 stalks into 1-2 inch pieces
Pour boiling water over the pieces
Steep for at least 5 minutes
Strain and serve hot or over ice
Besides tea, lemongrass appears in various culinary applications. It’s extensively used as a flavoring agent in Thai cooking, curries, soups, and seafood dishes. The essential oil extracted from lemongrass is also popular in aromatherapy, whereas the dried leaves serve as ingredients in herbal blends and supplements.
How lemongrass tea affects kidney function
Recent research has revealed surprising effects of lemongrass tea on kidney function. Clinical studies examining its impact present findings that anyone considering regular consumption should understand.
Impact on glomerular filtration rate (eGFR)
The estimated glomerular filtration rate (eGFR), a critical measure of kidney function, shows concerning changes with lemongrass tea consumption. In a study involving 105 subjects (55 men and 50 women), eGFR decreased significantly after 30 days of daily consumption across all dosage groups (2g, 4g, and 8g). Notably, female participants drinking tea made from 8g of lemongrass leaf powder showed decreased eGFR after just 10 days. This indicates potential kidney stress even with moderate consumption over time.
Changes in creatinine clearance rate (CCr)
Creatinine clearance rate (CCr), another important kidney function marker, follows a similar pattern to eGFR. Research demonstrates that CCr decreased significantly at day 30 in both male and female subjects across all dosage groups. Moreover, serum and urinary creatinine levels increased significantly in all participants, with serum urea rising particularly in those consuming infusions prepared from 4g or 8g of leaf powder.
Diuretic effects and urine output
One of the most pronounced effects of lemongrass tea is its diuretic action. A 2015 study found that lemongrass tea increased urine output more effectively than other beverages. This diuretic property works primarily by:
Promoting elimination of accumulated fluid
Increasing urination frequency
Enhancing the body’s removal of excess sodium
Electrolyte balance and urinary excretion
Although serum electrolyte levels generally remain stable during lemongrass tea consumption, urinary electrolyte excretion increases significantly. The renal fractional excretion of potassium, sodium, calcium, and chloride rises in most treatment groups. This occurs because lemongrass interferes with sodium and water reabsorption by inhibiting the 3-ion co-transport system (Na+/K+/2Cl−) and blocking aldosterone-sensitive sodium channels in the cortical collecting tubules. Consequently, this can affect overall fluid and electrolyte balance, particularly with regular consumption.
What the science says: Key findings from clinical studies
Clinical research has revealed compelling evidence about how lemongrass tea interacts with kidney function. These findings offer important insights for anyone considering this popular herbal beverage.
Short-term vs long-term consumption effects
Scientific studies show a clear distinction between short and extended use. At 10 days, lower doses (2g or 4g) of lemongrass tea produced no significant change in kidney function markers, though diuretic effects were observed. However, after 30 days, both eGFR and creatinine clearance rate (CCr) decreased significantly across all dosage groups. This suggests that even moderate consumption becomes problematic over time.
Dose-dependent outcomes
Research demonstrates that higher quantities of lemongrass tea accelerate kidney function changes. In a controlled study, all tested doses (2g, 4g, and 8g) led to decreased eGFR after 30 days. Nevertheless, the highest dose (8g) caused noticeable decline as early as 10 days in female participants. Serum and urinary creatinine increased in all groups, with serum urea rising specifically in those consuming 4g or 8g preparations.
Gender-specific responses
Interestingly, women appear more sensitive to lemongrass tea’s effects on kidney function. Female subjects showed decreased eGFR after just 10 days when consuming the 8g dose, while male participants required longer exposure before showing similar changes. This gender difference suggests women may need to be especially cautious with regular consumption.
Comparison with other herbs for kidney health
Unlike lemongrass tea, regular tea consumption (particularly morning consumption) shows positive associations with kidney function. One study found that dawn-to-noon tea consumption was linked to higher eGFR levels (3.18 mL/min/1.73 m²). This stark contrast highlights that lemongrass tea’s effects on kidneys differ significantly from other herbal beverages, warranting special consideration.
Who should be cautious with lemongrass tea
While many enjoy lemongrass tea for its refreshing flavor, certain groups should approach this herbal beverage with caution due to its potential effects on kidney health.
People with chronic kidney disease (CKD)
Individuals with pre-existing kidney conditions should be particularly vigilant about lemongrass tea consumption. Research indicates that high doses of lemongrass tea may adversely affect kidney function, primarily with prolonged use. Indeed, studies have shown dose and time-dependent negative impacts on renal function. For those already managing kidney problems, the detoxifying properties of lemongrass might put additional stress on already compromised kidneys.
Patients on dialysis or post-transplant
Kidney transplant recipients face unique risks when consuming herbal teas. Subsequently, cases have been reported of toxic therapeutic levels of immunosuppressive agents like cyclosporine A and sirolimus due to interactions with herbal preparations. Given that transplant patients are typically advised to maintain high fluid intake, many turn to herbal teas without realizing potential interactions. Accordingly, lemongrass should be approached with extreme caution prior to dialysis and after renal transplant.
Interactions with medications
Lemongrass can interfere with various medications. In fact, it may reduce or increase the effects of medicines related to diabetes, blood thinners, blood pressure, or kidney conditions. This interaction occurs largely because immunosuppressive agents are metabolized by the P450 cytochrome system, which certain compounds in herbs can inhibit. As a result, individuals taking any chronic medications should consult healthcare providers before introducing lemongrass tea.
Signs of potential kidney stress
Warning signs of adverse kidney effects may include decreased creatinine clearance rates and estimated glomerular filtration rates. Inasmuch as lemongrass acts as a natural diuretic, symptoms like weakness, fainting, and dizziness might occur, especially in people with low blood pressure. Monitoring kidney function becomes essential when regularly consuming lemongrass tea, even at lower doses over extended periods.
Lemongrass tea presents a complex picture when it comes to kidney health. Throughout this article, we’ve seen how this popular herbal beverage affects kidney function in ways many enthusiasts might not expect. Most importantly, scientific evidence suggests caution rather than wholesale endorsement.
Studies clearly demonstrate that prolonged consumption of lemongrass tea can significantly decrease kidney function markers like eGFR and creatinine clearance rates, regardless of dosage. Additionally, higher doses accelerate these changes, with women showing greater sensitivity to these effects. This stands in stark contrast to other teas that actually show positive associations with kidney health.
The diuretic properties of lemongrass tea, while beneficial for some conditions, might place additional strain on the kidneys over time. Consequently, people with existing kidney conditions, transplant recipients, or those on medication should exercise particular caution.
Though lemongrass tea offers impressive nutritional benefits—including vitamins, minerals, and antioxidants—these advantages must be weighed against potential kidney stress. Before making lemongrass tea a regular part of your wellness routine, consider your individual health circumstances and perhaps consult a healthcare professional, especially if you plan extended use.
After all, herbal remedies, despite their natural origins, can have powerful physiological effects. Therefore, moderation remains key when enjoying this aromatic beverage. For those without kidney concerns, occasional consumption likely poses minimal risk, but the evidence suggests that daily, long-term use warrants careful consideration.
Key Takeaways
Scientific research reveals important considerations about lemongrass tea’s impact on kidney function that contradict common assumptions about this popular herbal beverage.
• Lemongrass tea significantly decreases kidney function markers (eGFR and creatinine clearance) after 30 days of daily consumption across all dosage levels
• Women show greater sensitivity to lemongrass tea’s kidney effects, experiencing decreased function after just 10 days with higher doses
• People with chronic kidney disease, transplant recipients, and those on medications should avoid regular lemongrass tea consumption due to potential complications
• Unlike regular tea which shows positive kidney associations, lemongrass tea’s diuretic effects may stress kidneys over time
• Occasional consumption poses minimal risk for healthy individuals, but daily long-term use requires careful medical consideration
While lemongrass tea offers nutritional benefits including vitamins, minerals, and antioxidants, the scientific evidence suggests moderation is crucial. The research challenges the common belief that all herbal teas are universally beneficial, emphasizing the importance of evidence-based decisions when incorporating herbal remedies into your health routine.
FAQs
Q1. Is lemongrass tea safe for people with kidney problems? Lemongrass tea may not be safe for those with kidney issues. Studies show it can decrease kidney function markers like eGFR and creatinine clearance rates, even at moderate doses over time. People with chronic kidney disease, transplant recipients, or those on kidney-related medications should avoid regular consumption.
Q2. How does lemongrass tea affect kidney function? Lemongrass tea can significantly impact kidney function. Research indicates it decreases estimated glomerular filtration rate (eGFR) and creatinine clearance rate (CCr) after 30 days of daily consumption, regardless of dosage. It also has diuretic effects that may stress the kidneys over time.
Q3. Are there any gender differences in how lemongrass tea affects the kidneys? Yes, studies show that women appear more sensitive to lemongrass tea’s effects on kidney function. Female participants exhibited decreased eGFR after just 10 days when consuming higher doses, while male participants required longer exposure before showing similar changes.
Q4. How does lemongrass tea compare to other teas for kidney health? Unlike regular tea, which shows positive associations with kidney function, lemongrass tea has been found to potentially stress the kidneys. While green tea, for example, may help decrease inflammation and reduce the risk of kidney stones, lemongrass tea has shown to decrease kidney function markers in clinical studies.
Q5. Is occasional consumption of lemongrass tea safe for healthy individuals? For people with normal kidney function, occasional consumption of lemongrass tea likely poses minimal risk. However, daily long-term use warrants careful consideration due to its potential effects on kidney function. It’s always best to consult with a healthcare professional before making it a regular part of your diet, especially if you have any existing health conditions.
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