Is kidney failure a man's disease?

February 26, 2019

Our kidneys filter out toxic waste from the blood and regulate the fluid balance in the body as well as the balance of electrolytes and acid/base amongst others. Kidneys are important organs whose functions most of us take for granted, but when kidneys silently stop working this can create a life threatening situation. Renal replacement therapy, RRT, (dialysis or kidney transplantation) may save the lives of many patients for years and even decades, as kidney function can be replaced by machines for a long period of time - but patients on dialysis (and transplanted patients to a lesser extent) have shorter life expectancies. This is why kidney failure (end-stage renal disease) should be prevented wherever possible.

A new analysis of data in the ERA-EDTA Registry shows that men are affected by kidney failure much more often than women. In 2016, 26,446 men and 14,820 women started renal replacement therapy. Amongst older patients (>75 years of age), the difference was even more striking: the incidence in men was 2.7 times higher than that in women. 'One can only speculate about the reasons', explains Professor Ziad Massy (Paris), Clinical Nephrology Governance Chair/Chair of the Registry. The protective effects of oestrogens in women and/or the damaging effects of testosterone might cause kidney function to decline faster in men than in women [2]. Moreover, elderly women seem to be more inclined to choose conservative care instead of RRT [2].

However, hypertension or diabetes may also be implicated. There are distinct gender differences in the incidence and severity of hypertension [3]. It is more common in men and could be prevented by lifestyle changes. 'You can reduce it to a simple formula', says Massy. `Beyond treatment, more sports and less body weight will result in lower blood pressure. ´

The analysis also showed that the incidence of men starting renal replacement therapy due to diabetes and to glomerulonephritis/sclerosis was more than double that of their female counterparts. Again therapeutic strategies as well as lifestyle changes are available to optimize the control of diabetes. Finally, women are known to have better outcomes for some forms of glomerulonephritis, e.g. membranous (MGN) as well as focal and segmental glomerulosclerosis (FSGS) [4], which might explain why fewer women have to start dialysis because of these diseases. Additionally, Professor Massy adds, `if we want to reduce the incidence of chronic kidney disease in men, we should therefore concentrate on the early detection and control of these risk factors. Obviously, we need to broadcast these messages if we want to reduce the number of men who have to start dialysis'.
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[1] Kramer A, Pippias M, Noordzij M et al. ERA-EDTA Registry Report 2016: a summary. Link to the publication: https://academic.oup.com/ckj/advance-article/doi/10.1093/ckj/sfz011/5364536

[2] Carrero JJ, Hecking M, Chesnaye NC, Jager KJ. Sex and gender disparities in the epidemiology and outcomes of chronic kidney disease. Nat Rev Nephrol. 2018 Mar;14(3):151-164

[3] Everett B, Zajacova A. Gender differences in hypertension and hypertension awareness among young adults. Biodemography Soc Biol. 2015;61(1):1-17. doi: 10.1080/19485565.2014.929488.

[4] Cattran DC, Reich HN, Beanlands HJ et al. The impact of sex in primary glomerulonephritis. Nephrol Dial Transplant. 2008 Jul; 23 (7): 2247-53

About ERA-EDTA

With more than 11,000 members, the ERA-EDTA ("European Renal Association - European Dialysis and Transplant Association") is one of the biggest nephrology associations worldwide and one of the most important and prestigious European Medical Associations. It supports basic and clinical research in the fields of clinical nephrology, dialysis, renal transplantation and related subjects. It also supports a number of studies as well as research groups and has founded a special "Fellowship Programme" for young investigators as well as grant programmes. In order to involve young nephrologists in all its activities, ERA-EDTA has created the "Young Nephrologists' Platform" (YNP), a very active committee whose board includes members who are 40 years old or younger. In addition, it has established various working groups to promote the collaboration of nephrologists with other medical disciplines (e.g. cardiology, immunology). Furthermore, a "European Renal Best Practice" (ERBP) advisory board was established by the ERA-EDTA to draw up and publish guidelines and position statements. Another important goal of the ERA-EDTA is education: The series of CME courses combined with the annual congress offer an attractive scientific programme to cover the need for continuous medical education for doctors working in the fields of nephrology, dialysis and transplantation. The association's journals, NDT (Nephrology, Dialysis, Transplantation) and CKJ (Clinical Kidney Journal), are currently the leading nephrology journals in Europe; furthermore NDT-Educational is the Society's online educational journal , with free access for all users, as well as being a very important and useful feature of the NDT-Educational "Literature Review". The ERA-EDTA Registry is a large epidemiologic database comparing countries by assessing nephrology practices throughout Europe. ENP, the European Nephrology Portal, is the latest new initiative of ERA-EDTA, where all those interested in the activities of the Society can find everything that is happening, all in one place. Finally, ERA-EDTA is a member of the European Kidney Health Alliance (EKHA), a consortium of patients, nurses and foundations relating to renal issues that actively interacts with the European Parliament. For more information, please visit http://www.era-edta.org

ERA-EDTA

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