Call 911 or go to the nearest emergency room if you have little or no urination, sudden swelling in your legs, ankles, or around your eyes, confusion, chest pain, or severe shortness of breath. These can be signs of a serious kidney or heart problem that needs emergency care.
Does Smoking Damage Your Kidneys?
Yes. Research studies have found that smoking is linked to a higher risk of chronic kidney disease and to faster loss of kidney function over time. Smoking is not one of the four risk factors most often listed for kidney disease, but it adds to the strain on your kidneys in ways that matter, especially if you already have another risk factor.
What the Research Actually Shows
The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) identifies diabetes, high blood pressure, heart disease, and a family history of kidney failure as the leading risk factors for chronic kidney disease. Smoking is not on that short list, but it works alongside those risk factors in a few known ways.
- Smoking raises blood pressure, and high blood pressure is one of the top causes of kidney damage.
- Smoking harms blood vessels throughout the body, including the small vessels inside the kidneys that filter your blood.
- Research studies have found that people who smoke tend to lose kidney function faster than people who never smoked, especially if they already have diabetes or high blood pressure.
- Some studies have found that quitting smoking is linked to a slower rate of kidney function decline compared to continuing to smoke.
The Centers for Disease Control and Prevention (CDC) notes that smoking harms nearly every organ in the body and is a major cause of heart disease and stroke. Since heart and blood vessel health is closely tied to kidney health, this wider damage is one reason researchers keep studying the smoking-kidney connection.
Who Should Pay Closer Attention
Some groups may want to talk with a provider about kidney screening sooner rather than later, including people who:
- Have smoked heavily or for many years
- Also have diabetes or high blood pressure
- Have a family history of kidney disease or kidney failure
- Have already been told they have reduced kidney function
- Have had a kidney transplant
This list is general education, not a personal risk assessment. A doctor or nurse practitioner is the right person to review your specific health history and decide what testing, if any, makes sense for you.
Useful details to confirm about Smoking and Kidney Health
- Ask whether a routine blood or urine test could check your kidney function.
- Tell your provider how long you have smoked and how much, since this helps them understand your overall risk picture.
- Mention any swelling, changes in urination, or ongoing fatigue, even if it seems minor.
- Ask about your blood pressure numbers and what they mean for your kidneys specifically.
- If you smoke and want to quit, ask what support options are available through your health plan.
What remains uncertain about Smoking and Kidney Health
Most of the research connecting smoking and kidney disease comes from population studies that track large groups of people over time. These studies can show a strong link, but they cannot prove that smoking alone causes kidney disease in every case, since other factors like diet, weight, and existing health conditions often play a role too. Researchers also note that it is not always clear whether quitting smoking fully reverses existing kidney damage, even though it may slow further decline. If you want the most current, detailed research findings, NIDDK is a good starting point for consumer-friendly information.
Questions readers ask about Smoking and Kidney Health
Can quitting smoking improve kidney health?
Some research suggests quitting is linked to a slower decline in kidney function compared to continuing to smoke. It is not clear whether quitting reverses damage that has already happened. A doctor can help you understand what quitting might mean for your specific situation.
Does vaping carry the same kidney risks as smoking cigarettes?
Research on vaping and kidney health is newer and more limited than research on cigarette smoking. Vaping products still deliver nicotine, and researchers are continuing to study its longer-term effects on the body, including the kidneys.
What test checks for kidney damage?
Providers commonly use blood and urine tests to check kidney function. Only a healthcare provider can order the right tests for you and explain what your results mean.
Is kidney damage from smoking reversible?
This depends on the person and how much damage has occurred. Some effects may improve after quitting, while others may not. This is a question to bring directly to a doctor who knows your health history.
Keep Learning
If you are thinking about quitting, our Smoking & Vaping Cessation guide covers the products and programs people use to quit. If you want to understand how virtual providers prescribe cessation medication, see our Telehealth for Smoking Cessation hub. For broader information on living with reduced lung function and other smoking-related health concerns, visit our COPD & Respiratory Wellness section.
Educational Disclaimer
This article provides general educational information about smoking and kidney health. It is not medical advice, does not diagnose or treat any condition, and is not a substitute for care from a licensed healthcare provider. If you have concerns about your kidney health, blood pressure, or smoking history, talk with a doctor or nurse practitioner about testing and options that fit your situation. If you are experiencing chest pain, severe shortness of breath, or coughing up blood, call 911 or go to the nearest emergency room.