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The amount of food and drink that we consume has leading role to the proper functioning of the body. Even if it is a healthy food, such as fruits and vegetables, again, the dose is the biggest factor.

Today we will pay attention to coffee intake and in particular the effect of caffeine on the kidneys in the human body.

Due to the connection between coffee intake and high blood pressure, there is a concern about the ability of coffee to cause kidney damages. When the kidneys are stimulated by caffeine, there is an increased excretion of urine along with electrolytes, which causes negative changes in the functioning of the endocrine, cardiovascular and nervous systems.

According to statistics from recent years, urolithiasis is one of the most common kidney diseases among people of all ages and genders around the world. This disease is characterized by the gradual formation of stones in the kidneys and bladder.

Urolithiasis may be a consequence of dependence on caffeinated beverages, in particular coffee (including coffee with milk) and strong tea. Evidence of this are studies performed by Canadian urologists. As a result of a series of experiments, they found that in healthy people who consumed more than three cups of coffee a day, the concentration of calcium compounds in the excreted urine increased sharply within a few days. In addition to calcium, elevated titters of magnesium, citrate, and other substances, directly involved in the formation of kidney stones, were observed in the urine of the patients who took part in the study.

The effect of caffeinated beverages on a person’s urinary system is due to the expressed diuretic effects of coffee, as a result of which is observed a relative dehydration of the body, thickening of the urine tract and the formation of solid elements in it, which eventually turn into stones. Therefore, doctors do not recommend patients with CKD to take caffeinated beverages or at least the amount of them should not exceed the daily recommended dose.

For coffee lovers, the consumption of this drink should be strictly limited and not more than a cup or two per day.



On Sunday, an initiative of Dialysis Center NephroLife was held on the occasion of the World Kidney Day. This day is traditionally celebrated in March as in many countries events and various campaigns are performed showing the support to people suffering from CKD and having kidney problems. Next to Hotel Bulgaria in the seaside town, representatives of the dialysis center distributed to people informative materials about the medical facility, specially made cookies and a green ribbon as a sign of support of people with kidney disease. The campaign was implemented in partnership with the Municipality of Burgas.
д-р Николай Тодоров


One of the best nephrologists in Bulgaria with free consultations of patients in dialysis and pre-dialysis condition.

Top nephrologist Dr. Nikolay Todorov will have a day for free consultations on March 12th in the city of Burgas, announced from the dialysis center “NephroLife”. The screening is part of the health facility’s campaign to mark World Kidney Day, which is celebrated annually on the second Thursday in March.

The consultations with the specialist are aimed at patients in pre-dialysis and dialysis stages, for whom a highly specialized and reliable assessment of the health condition is needed.

Those wishing to make an appointment, please call: 056/555 588, 0879/084 777 or find us at NephroLife Dialysis Center on Transportna Str. (behind Mall Plaza).

For the World Kidney Day, which is set on March 11th this year, the dialysis center`s team has prepared an additional initiative, showing their support to people with chronical kidney disease. In the area next to hotel Bulgaria and the town hall building, from 10 a.m. till 2 p.m., everyone will be able to receive informative materials, brochures and a green ribbon to support people with kidney disease throughout the month. The campaign is implemented in partnership with the Municipality of Burgas.

“For us as a health institution is important to raise the awareness of citizens of Burgas to this type of public health problems, as well as to provide an opportunity for consultations with leading specialists in the field of nephrology. People should know that timely prevention is extremely important to control and even slow down the development of kidney disease. Following the best practices applied in Israel, we believe that with adequate measures and timely treatment, patients with renal failure will have an improved, productive and quality life,” commented the administrative manager of “NephroLife” Silvia Guyleva.

Dr. Nikolay Todorov Medical Manager and Chief Nephrologist at the NephroLife Dialysis Center graduated the Medical School in Sofia in 1977, taking degree in Internal Medicine in 1983 and Nephrology in 1985.

He specialized in “Temporary vascular access for hemodialysis – subclavian vein catheterization by using Seldinger method for hemodialysis patients” in Frankfurt, Germany in 1984 and later on, introduced the method in Bulgaria.

In 1994 he specialized in “Preparing patients for kidney transplantation and treatment after the transplantation” as well as “Inserting permanent  tunnel catheters in patients undergoing hemodialysis“ in Erasmus Hospital in Brussels, Belgium in  Nephrology and Transplantation Clinics with Prof. Vanerogen and Prof. Abramovich.

He has a number of publications in the field of vascular access in hemodialysis patients and reports at scientific conferences.