Donate or not to donate if with visceral obesity

Dear Editor,

We read with great interest the article titled “Visceral obesity in Asian living kidney donors significantly impacts early renal function after donor nephrectomy” by Pek et al. [1]. The authors analyzed whether visceral obesity (VO) had an impact on early renal function in kidney donors. We have two objections about this study.

First, by the time when the estimated glomerular filtration rates (GFR) were calculated did the patients still have VO? If so, it would be a better approach to use a calculation method adjusted for body mass index. This is secondary to the fact that most formulas in general use for estimation of GFR are not appropriate for use in obese populations and, thus, might mislead the interpretation of GFR [2].

Second, it is stated in the particular article that hypertension and hyperlipidemia preoperatively did not differ between the groups which means certain patients were not ideal donors. This raises question whether the recipients of these suboptimal donors had any issues with their kidney grafts such as delayed graft function, etc. If we knew the answer to this concern, we might rule that we should exclude patients with VO in the first place when it comes to kidney donation.


  1. 1.

    Pek GXW, Ngoh CLY, Teo BW, Vathsala A, Goh BYS, Yong CHR, Raman L, Tiong HY (2018) Visceral obesity in Asian living kidney donors significantly impacts early renal function after donor nephrectomy. World J Urol. [(Epub ahead of print) PubMed PMID: 30456710]

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  2. 2.

    Nguyen MT, Fong J, Ullah S, Lovell A, Thompson CH (2015) Estimating glomerular filtration rate in obese subjects. Obes Res Clin Pract 9(2):152–157

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BDY: manuscript writing/editing.

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Correspondence to Baris D. Yildiz.

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Yildiz, B.D. Donate or not to donate if with visceral obesity. World J Urol 38, 249 (2020).

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