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Will You Need Dialysis? Everything You Need to Know in Plain English

Dr. Priya Sammani (MBBS)

Medically reviewed by Dr. Priya Sammani (MBBS) — Updated on Oct 22, 2026 · 8 min read

Will You Need Dialysis? Everything You Need to Know in Plain English
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Your doctor might tell you that your kidney function has slowed down a bit and that you need to keep a close eye on it. Hearing news like this can make your heart race or cause you to worry. A big question that often pops up in your mind is whether you will eventually need dialysis. This is a very common concern for many people dealing with kidney issues.

Today, we will talk about what dialysis really means, who needs it, and how doctors perform it. We want to explain everything in very simple words so you can easily understand your health options.

Key Takeaways

  • Dialysis acts as an artificial filter when your kidneys can no longer clean your blood.
  • There are two main types of dialysis: hemodialysis and peritoneal dialysis.
  • Dialysis treatments are generally painless, though they can cause temporary side effects.
  • Your doctor will choose the best treatment plan based on your overall health and lifestyle needs.
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What Is Dialysis?

Simply put, dialysis is a medical treatment that takes over the job of your kidneys when they can no longer do it themselves. It cleans your blood using a special machine or your body's own natural lining.

Think of your two kidneys as super filters inside your body. They sit just below your rib cage on each side of your spine and look like two small beans. Their main job is to filter your blood and remove extra waste and fluid through your urine.

Besides filtering waste, healthy kidneys also help control your blood pressure, keep your bones strong, and balance important minerals like potassium and sodium. They also produce a hormone that tells your body to make red blood cells.

When your kidneys suffer severe damage, dangerous toxins start to build up inside your body. That is when dialysis becomes a life-saving treatment option.

Who Needs Dialysis?

Kidney disease can become severe over time, reaching a point where your kidneys can no longer keep your body running properly. When this happens, you may need either dialysis or a kidney transplant. Common causes of kidney failure include high blood pressure, diabetes, lupus, physical injuries, or sometimes unknown medical factors.

Doctors usually start dialysis when your kidneys fail or when blood tests show that toxic waste levels in your blood are dangerously high. Common warning signs include nausea, severe fatigue, body swelling, and vomiting.

Kidney disease has five stages. When you reach Stage 5, meaning your kidneys only work at 10 percent to 15 percent of their normal capacity, doctors call it end-stage renal disease. At this point, you will need dialysis or a kidney transplant to survive.

Your doctor will decide when you need to start dialysis and which method fits you best. They look at your age, strength, overall health, blood test results, and how well you can follow a treatment plan.

What Are the Types of Dialysis?

There are two main types of dialysis available for patients. Let us look at how they differ from one another.

Dialysis Type How It Works / Where It Is Done
Hemodialysis
How It Works: Your blood flows out of your body through a machine (an artificial kidney) to be cleaned and then returns to your body.
Where It Is Done: In a hospital, a dialysis center, or sometimes at home.
Peritoneal Dialysis
How It Works: Your blood is cleaned inside your body. A special fluid flows into your belly to absorb waste and is then drained out.
Where It Is Done: Usually done right at home by yourself.

Also, hospitals use a slow, continuous treatment called continuous renal replacement therapy for critically ill patients in intensive care units who cannot tolerate standard dialysis.

Hemodialysis Details

During hemodialysis, a special machine draws blood out of your body. To make this possible, a surgeon performs a minor procedure to create a blood vessel access point under your skin. There are three main types of vascular access:

  • Fistula: A surgeon connects an artery directly to a vein in your arm. This is the best and longest-lasting option, though it takes about six weeks to heal before use.
  • Graft: A surgeon uses a small plastic tube to connect an artery and a vein. This heals faster and can be used within two weeks, but it does not last as long as a fistula.
  • Catheter: If you need to start dialysis right away, a doctor places a soft tube into a large vein in your neck, chest, or groin. This is meant as a temporary solution.

During treatment, you sit comfortably in a chair while a trained technician places two needles into your vascular access. One needle carries your blood to the machine for cleaning, and the other needle returns the clean blood to your body. Sessions usually take three to five hours and happen about three times a week.

Peritoneal Dialysis Details

Peritoneal dialysis works in a completely different way. In this method, the thin lining inside your belly, called the peritoneum, acts as your body's natural filter.

About three weeks before treatment starts, a surgeon places a soft tube, called a catheter, permanently into your belly. You then fill your belly cavity with a special cleansing fluid through this tube. This fluid absorbs waste products from your blood over several hours. Afterward, you drain the waste fluid into a bag. People call this complete cycle an exchange.

Because you can do this at home, you do not need to visit a clinic constantly. There are two main ways to perform it:

  • Automated Peritoneal Dialysis: A machine performs your fluid exchanges automatically at night while you sleep.
  • Continuous Ambulatory Peritoneal Dialysis: You perform the fluid exchanges manually by hand several times a day.

Are There Side Effects of Dialysis?

Dialysis treatments themselves do not cause pain. However, you might experience certain side effects during or after your sessions. If you ever feel sharp pain, let your doctor or nurse know right away.

Common side effects include:

  • Itchy skin .
  • Low blood pressure, which happens often in patients with diabetes .
  • Trouble sleeping at night .
  • Fluid overload in the body .
  • Infections, especially around the catheter site .
  • Depression or changes in your mood .
  • Nausea and vomiting .
  • Muscle cramps .
  • Extreme tiredness and fatigue .

To stay healthy while undergoing treatment, follow these important daily care tips:

  • Check your vascular access site every single day for redness, pus, or swelling. If you notice any of these signs, call your doctor right away.
  • Keep the bandage covering your catheter clean and dry at all times.

When to Seek Emergency Help

Call 911 or 999, or go to the nearest emergency department right away if you experience chest pain, severe shortness of breath, sudden confusion, uncontrolled bleeding from your access site, or a high fever with chills.

💡 Take-Home Message

  • When your kidney function drops below 10 to 15 percent, you may need dialysis to clear waste from your body.
  • Hemodialysis and peritoneal dialysis are the two main treatment choices. Talk with your doctor to find the best match for your lifestyle.
  • Dialysis is not painful, but it can cause mild side effects. Always report any unusual discomfort to your medical team.
  • Never stop your treatment on your own. Always discuss any changes with your doctor first.
  • Dialysis is a tool to help extend your life, but it is not the right choice for every single patient. Working closely with your care team ensures you get the best personalized advice.
❓ FAQ

Frequently Asked Medical Questions (FAQ)

Evidence-based clinical answers to common patient questions

Does dialysis hurt?

No, dialysis treatments are generally painless. You might feel a brief pinch when nurses insert the needles for hemodialysis, but the treatment itself does not hurt. Some patients experience mild cramping or dizziness as fluid is removed, but your care team monitors you closely to keep you comfortable.

How long do people live on dialysis?

Many people live active, fulfilling lives on dialysis for 5 to 10 years, and often much longer. Your life expectancy depends greatly on your age, overall health, and how well you follow your diet and treatment schedule. Working toward a kidney transplant can also greatly improve long-term outlook.

Can I travel while receiving dialysis?

Yes, traveling is completely possible with proper planning. If you use hemodialysis, you can arrange treatment at a center near your destination ahead of time. If you use peritoneal dialysis, you can often travel with your portable supplies or have them shipped directly to where you are staying.

What foods should I avoid during dialysis?

Your doctor or a renal dietitian will guide you to limit foods high in potassium, phosphorus, and sodium. This usually means reducing your intake of bananas, oranges, potatoes, tomatoes, dairy products, and processed meats. Controlling your fluid intake is also very important to prevent dangerous fluid buildup.

Can kidney function ever recover after starting dialysis?

In some rare cases of acute kidney injury caused by sudden illness or severe infection, kidney function can return, allowing patients to stop dialysis. However, when kidney failure results from chronic conditions like diabetes or long-term high blood pressure, the damage is usually permanent, and dialysis becomes a lifelong necessity unless a transplant occurs.

📚

Verified Scientific & Medical References (PubMed / WHO)

✓ Peer-Reviewed Sources
  1. National Health Service (NHS). Dialysis Overview.
  2. Mayo Clinic. Dialysis Patient Care and Procedures.
  3. Cleveland Clinic. Understanding Dialysis and Kidney Disease.
  4. Centers for Disease Control and Prevention (CDC). Kidney Disease Basics.
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