Clinically Reviewed by Dr. Andrew Stein MD, Consultant Nephrologist. Last updated: April 2026
Can you live a normal life with just one kidney? What if you’re born with a single kidney, or lose one later due to illness or surgery? These are common questions—and the reassuring news is that most people with one kidney live healthy, active lives.
This guide explains what it means to have one kidney, possible health risks, lifestyle considerations, and when medical follow-up may be needed.
Yes. A single healthy kidney is usually more than capable of doing the work your body needs.
While most people are born with two kidneys, one kidney can provide enough filtration to keep the body functioning normally. With a few sensible precautions and a healthy lifestyle, people with one kidney typically have a normal life expectancy.
“Around 1 in 1,000 people are born with just one kidney, and most never experience related health problems.”
For the vast majority of people, having one kidney does not limit everyday activities.
People with a single kidney can usually:
In many cases, people only discover they have one kidney by chance—often during an ultrasound or CT scan done for an unrelated reason.
Most people with one kidney remain well. However, a small number may develop issues over many years, including:
Because of this, some people may need occasional monitoring.
Do I Need Regular Check-Ups?
Many people with one kidney do not require routine testing. Others may be advised to have simple blood tests once a year to monitor kidney function (such as GFR, creatinine and electrolyte levels).
Your doctor can advise whether monitoring is necessary in your case.
Usually, no special diet is required. However, general healthy habits are strongly recommended:
Can I Drink Alcohol?
Yes, alcohol is allowed—but moderation is key. Excessive drinking can strain the liver and indirectly affect kidney health, so it’s important to stay within recommended limits.
There are three main reasons a person may have a single kidney:
1. Born with One Kidney
Some people are born with only one kidney (a condition called unilateral renal agenesis). This is slightly more common in males and most often involves the left kidney.
2. Surgical Removal of a Kidney
A kidney may be removed due to:
3. Kidney Donation
Some people choose to donate a kidney for transplantation and usually continue to live healthy lives afterward.
Serious damage to a solitary kidney is uncommon—but it can be more serious because there is no ‘backup’ kidney.
Situations that can cause sudden kidney failure include:
In rare cases, sudden kidney failure may require emergency dialysis until the underlying problem is treated.
The outlook for people with one kidney is overwhelmingly positive. Most will never experience kidney-related problems and can expect a normal, active life.
With sensible lifestyle choices and medical advice when needed, having a single kidney is usually not a limitation.
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