Kidney cleanses: why creatinine can fall without repair

https://www.youtube.com/watch?v=8ZZmK5blAXA

The short answer

A kidney cleanse can move your creatinine result without repairing your kidneys. Cooked meat, hydration and ingredients that increase urination can change the number or the amount of urine you make, while damaged kidney tissue stays damaged. Some cleanse ingredients also carry documented kidney risks or drug interactions. The useful question is what protects kidney function over time, rather than what briefly lowers one blood-test result.

What we cover

• Why a cooked-meat meal raised creatinine and lowered estimated kidney filtration in controlled feeding studies, then cleared after fasting. Primary source

• Why more urine does not prove better filtration: a small dandelion-extract study measured urination, not repaired kidneys. Primary source

• What a 2026 review of 12 randomized turmeric trials found, and why a supplement result is different from proving that a cleanse works. Primary source

• The kidney-injury signals behind herbs and supplements, including aristolochic acid, and the drug interactions of St John's wort. Review

• Why star fruit is a separate concern in kidney disease, where toxins can accumulate and oxalate can injure the kidney. Review

• The changes with evidence behind them: less sodium, a plant-based eating pattern within your kidney plan, and replacing sweetened drinks. Guideline

Timestamps

0:00 The kidney-cleanse contradiction

0:48 Why creatinine can move without kidney repair

1:28 The meal that moved eGFR from 84 to 59.5

3:33 What is actually in a cleanse pouch

4:04 More urine is not more kidney function

5:41 The kidney-injury signals on the label

6:26 St John's wort, aristolochic acid, and star fruit

9:04 What actually helps your kidneys

10:10 Sodium

10:57 The pattern on your plate

12:24 The action to take today

References

• Preiss DJ, et al. Ann Clin Biochem. 2007;44:35-42. PMID 17270090. https://pubmed.ncbi.nlm.nih.gov/17270090/

  A cooked-meat meal changed serum creatinine and the estimated filtering score without establishing a change in actual kidney filtration. Evidence type: controlled feeding study.

  
  

• Nair S, et al. Diabetes Care. 2014;37(2):483-487. PMID 24062331. https://pubmed.ncbi.nlm.nih.gov/24062331/

  Cooked meat raised creatinine across kidney-disease stages, with the effect clearing after fasting. Evidence type: interventional crossover study.

  
  

• Clare BA, et al. J Altern Complement Med. 2009;15(8):929-934. PMID 19678785. https://pubmed.ncbi.nlm.nih.gov/19678785/

  Dandelion extract increased urination in volunteers; the study did not demonstrate kidney repair. Evidence type: small pilot study.

  
  

• Bahari H, Asadi Z. Endocrinol Diabetes Metab. 2026;9(2):e70189. PMID 41761990. https://pubmed.ncbi.nlm.nih.gov/41761990/

  This review pooled 12 randomized turmeric trials rather than testing a commercial kidney cleanse. Evidence type: systematic review and meta-analysis.

  
  

• Pearson A, et al. Curr Opin Toxicol. 2022;32:100371. PMID 36311298. https://pubmed.ncbi.nlm.nih.gov/36311298/

  The review describes kidney toxicity associated with herbal and dietary supplements. Evidence type: narrative review.

  
  

• Brown AC. Food Chem Toxicol. 2017;107:502-519. PMID 28755953. https://pubmed.ncbi.nlm.nih.gov/28755953/

  The review examines kidney toxicity from herbs and supplements, including aristolochic-acid exposure. Evidence type: narrative review.

  
  

• Nicolussi S, et al. Br J Pharmacol. 2020;177(6):1212-1226. PMID 31742659. https://pubmed.ncbi.nlm.nih.gov/31742659/

  St John's wort can alter drug handling through clinically important interactions. Evidence type: pharmacology review.

  
  

• Yasawardene P, et al. Trans R Soc Trop Med Hyg. 2021;115(9):947-955. PMID 33693950. https://pubmed.ncbi.nlm.nih.gov/33693950/

  The review documents star-fruit toxicity, including kidney injury and neurological toxicity. Evidence type: systematic review.

  
  

• Abeysekera RA, et al. BMC Res Notes. 2015;8:796. PMID 26680759. https://pubmed.ncbi.nlm.nih.gov/26680759/

  The report describes acute kidney injury after star-fruit ingestion. Evidence type: case report.

  
  

• Heo GY, et al. JAMA Netw Open. 2024;7(2):e2356885. PMID 38416492. https://pubmed.ncbi.nlm.nih.gov/38416492/

  Sweetened-drink intake was associated with new kidney disease; this was an observational comparison rather than a treatment trial. Evidence type: observational cohort.

  
  

• KDIGO CKD Work Group. Kidney Int. 2024;105(4S):S117-S314. PMID 38490803. https://pubmed.ncbi.nlm.nih.gov/38490803/

  The guideline supports established kidney-protection measures, including dietary and medication management tailored to the person. Evidence type: clinical guideline.

One study explained in plain language every week, with sources attached, plus the free kidney health guide: https://guides.selfprinciple.org/kidney

This content is for educational purposes only and is not medical advice. Always consult your healthcare provider for individual care. The views expressed are Dr. Sean Hashmi's own and do not represent his employer.

Never start, stop, or change the dose of any prescription medication without consulting your physician.