Quick Summary
Alcohol, stimulants, opioids, tobacco and injection drug use can all strain the heart and blood vessels. The encouraging part is that some of that strain can ease after use stops. Research shows that cutting back heavy drinking lowers blood pressure, that stopping alcohol reduced atrial fibrillation recurrences in one randomized trial, and that heart risk falls over the years after quitting smoking. Some heart problems improve after use stops, while other damage may persist or need long-term care, so checkups matter. This guide covers what the research shows and what helps the heart in recovery.
Key Takeaways
- NIAAA says that among people who drink heavily, reducing alcohol intake lowers blood pressure, and the more they cut back, the bigger the effect.
- In a randomized trial of drinkers with atrial fibrillation, the irregular rhythm came back in 53% of those who stopped drinking versus 73% of those who kept drinking.
- Cocaine and methamphetamine can cause heart attacks, strokes and irregular heartbeats, even in younger people.
- After quitting smoking, the CDC says the added risk of coronary heart disease drops by half within 3 to 6 years.
- High blood pressure usually has no symptoms. Getting checked is the only way to know.
When people think about the health benefits of getting sober, the liver and brain usually come to mind first. The heart deserves a spot on that list. Many substances raise blood pressure, speed up the heart or disturb its rhythm, and over time that can do real damage. The research also shows that some of it can improve once use stops. Here is what the evidence says, substance by substance, with the limits attached. One note up front: heart symptoms and known heart disease need medical evaluation, not just lifestyle changes.
Alcohol and the Heart
The National Institute on Alcohol Abuse and Alcoholism (NIAAA) is clear that heavy drinking is hard on the heart. Its overview of alcohol’s effects on the body says that “long-term heavy drinking weakens the heart muscle, causing cardiomyopathy,” and that alcohol misuse “can also lead to high blood pressure, an irregular heartbeat (arrhythmia), or increased heart rate.” NIAAA’s core resource for clinicians adds that heavy, long-term alcohol use increases the risk of heart attack and stroke, and that “even low-level drinking offers no cardiovascular protection and may increase the risk of stroke.”
Even a single binge can affect the heart’s rhythm. NIAAA notes that heavy intake, “even one binge drinking episode,” can trigger an acute arrhythmia sometimes called “holiday heart syndrome.”
What can improve after cutting back or stopping
- Blood pressure. NIAAA says that “among people who drink heavily, reducing alcohol intake lowers blood pressure in a dose-dependent manner.” A 2017 meta-analysis of 36 trials in The Lancet Public Health found the biggest drop among people who drank six or more drinks a day and cut back by about half: about 5.5 points in systolic and about 4 points in diastolic blood pressure. In people who drank two or fewer drinks a day, cutting back was not linked to a significant change.
- Heart rhythm. In a 2020 randomized trial of 140 regular drinkers with atrial fibrillation, published in the New England Journal of Medicine, atrial fibrillation came back in 53% of people assigned to stop drinking, compared with 73% of those who kept their usual drinking, over 6 months. The abstinence group also spent less time in atrial fibrillation.
- Heart muscle. NIAAA says that abstinence or reductions in drinking “are associated with improvements in heart health in patients with cardiomyopathy.” In a study of 94 people with alcohol-related cardiomyopathy followed for a median of about 5 years, published in JACC: Heart Failure, 37% had recovery in the heart’s pumping function. That same study also found 15% died of cardiovascular causes and 15% needed a heart transplant, so outcomes vary widely.
If you drink heavily and regularly, talk with a doctor before you stop. Alcohol withdrawal can become dangerous quickly, and some people need medical care to stop safely. Confusion, hallucinations, a seizure or a racing heart during withdrawal is an emergency, so call 911. Our page on alcohol withdrawal explains the warning signs, and what happens to your body when you stop drinking covers other changes.
People are often surprised that their blood pressure or heart rate was part of the story. Getting sober gives your body a real chance to recover, but it doesn’t replace a checkup. I always encourage people to see a doctor early in recovery and find out where things stand.
Donnita Smart, LCDC
Stimulants: Cocaine and Methamphetamine
Stimulants put direct stress on the cardiovascular system. NIDA’s cocaine research page says short-term effects include “constricted blood vessels; dilated pupils; and increased body temperature, heart rate, and blood pressure,” and that cocaine use is linked with increased risk of stroke, inflammation of the heart muscle, weaker heart contractions and aortic ruptures. Combining cocaine and alcohol produces cocaethylene, which NIDA says “may increase the toxic effects of cocaine and alcohol on the heart.”
NIDA’s methamphetamine research page lists rapid heart rate, irregular heartbeat, stroke and increased blood pressure as immediate effects, and stroke and heart failure among the long-term risks. Our post on what cocaine does to your heart goes deeper.
Chest pain, a racing or irregular heartbeat, sudden weakness on one side, trouble speaking, or a severe headache after stimulant use are emergencies. Call 911.
We’re here to make treatment as accessible and affordable as possible, and we are in network with many insurance providers. Not sure about your coverage? We can help.
Opioids and Injection Drug Use
The biggest immediate danger with opioids is overdose. NIDA’s opioids research page warns that “opioids can slow breathing to life-threatening levels,” and notes that opioids can also cause slower heart rate, low blood pressure, heart failure and cardiac arrest.
Injection drug use adds another risk: infection of the heart’s inner lining and valves, called endocarditis. A CDC report in Morbidity and Mortality Weekly Report found that in North Carolina, hospital discharges for drug dependence combined with endocarditis rose more than twelvefold from 2010 to 2015, and the related hospital costs rose from $1.1 million to $22.2 million. Fever, chills, new shortness of breath or chest pain in someone who injects drugs needs prompt medical care.
Some medications used to treat opioid use disorder, including methadone, may call for a heart-risk review or monitoring. A 2025 meta-analysis of 22 observational studies in Medicine found QTc prolongation, a change in heart rhythm seen on an electrocardiogram, in 34% of people on methadone maintenance. A dangerous rhythm called torsades de pointes was rare. The authors recommend careful dosing and regular electrocardiogram checks, especially at higher doses. This is not a reason to avoid medication treatment. Talk with your prescriber about the risks and benefits, and mention any heart history.
Tobacco and Nicotine
Many people in recovery also smoke, and quitting is one of the biggest things you can do for your heart. The CDC’s benefits of quitting timeline says that:
- Within minutes, heart rate drops.
- Within 1 to 2 years, the risk of heart attack drops sharply.
- Within 3 to 6 years, the added risk of coronary heart disease drops by half.
- Within 5 to 10 years, the risk of stroke decreases.
- After 15 years, the risk of coronary heart disease drops to close to that of someone who does not smoke.
The U.S. Surgeon General’s 2020 report on smoking cessation adds that “smoking cessation is beneficial at any age” and reduces the risk of cardiovascular illness and death. Ask your care team about help quitting tobacco alongside other recovery goals.
What May Not Fully Reverse
Recovery helps, but it does not erase everything. Damage from a past heart attack or stroke, valve damage from endocarditis, and advanced cardiomyopathy may need ongoing care. That is why it helps to start recovery as early as possible, and why regular checkups matter even after you feel better. Results vary a lot from person to person.
What Helps the Heart in Recovery
- Get checked. The CDC says that high blood pressure “usually has no warning signs or symptoms” and that measuring it “is the only way to know.” Ask your doctor about blood pressure, cholesterol and whether an electrocardiogram makes sense for you.
- Move regularly. The National Heart, Lung, and Blood Institute’s physical activity guidance recommends 150 to 300 minutes of moderate aerobic activity a week for adults. Start slowly and check with a doctor first if you have heart problems or have not been active.
- Eat for your heart. NHLBI’s heart-healthy eating page recommends a plan that limits sodium, saturated fat, added sugars and alcohol, and notes the DASH eating plan has been shown to lower high blood pressure. Our post on nutritional deficiencies caused by addiction covers recovery nutrition.
- Protect your sleep. NHLBI says sleep helps heal and repair the heart and blood vessels, and that untreated sleep disorders raise the risk for heart problems. Our guide to sleep and sobriety has practical tips.
- Treat co-occurring conditions. Stress, depression and anxiety affect both recovery and overall health. Our post on co-occurring disorders explains why treating both matters.
Taking care of your heart in recovery is mostly the same everyday stuff that helps recovery itself: sleep, moving your body, eating real meals, and not white-knuckling stress alone. You don’t have to overhaul everything at once. Pick one thing and build from there.
Donnita Smart, LCDC
When to Reach Out for Help
Call 911 right away for chest pain or pressure, fainting, a racing or irregular heartbeat with dizziness, sudden weakness or numbness on one side, trouble speaking, or a sudden severe headache.
Talk with a doctor or treatment provider soon if:
- You have a history of heavy drinking or stimulant use and have not had your blood pressure or heart checked
- You notice shortness of breath, swelling in your legs or ankles, or get tired very easily
- You inject drugs and have fever, chills or new chest symptoms
- You want help cutting back or stopping alcohol, drugs or tobacco
If you or someone you know is in emotional crisis, call or text 988. If anyone is in immediate danger or cannot stay safe, call 911 or go to an emergency department. If someone has stopped breathing, cannot be woken or may have overdosed, call 911, give naloxone if available, and stay with the person until help arrives. Alcohol and sedative withdrawal can be dangerous, so do not stop suddenly after heavy regular use without medical advice.
Talking With a Professional
It helps to talk with both an addiction treatment provider and a primary care doctor or cardiologist. Bring a list of what you have used, how much and for how long, any past heart symptoms or events, and any medications you take. The admissions team at Discovery Point Retreat can explain what an assessment involves. Ask which services are currently available and whether outside medical care might also be needed.
FAQ
Does quitting drinking lower blood pressure?
For people who drink heavily, yes. NIAAA says reducing alcohol lowers blood pressure, and a meta-analysis found the largest drops in people who drank six or more drinks a day and cut back by about half.
Can alcohol-related heart damage get better?
Sometimes. NIAAA says abstinence or cutting back is associated with improvements in cardiomyopathy, and one study found 37% of patients had recovery in heart function. Outcomes vary, so ongoing medical care matters.
Does stopping drinking help atrial fibrillation?
In one randomized trial of regular drinkers with atrial fibrillation, stopping drinking reduced how often the irregular rhythm came back over 6 months.
How fast does heart risk drop after quitting smoking?
The CDC says heart attack risk drops sharply within 1 to 2 years, and the added risk of coronary heart disease drops by half within 3 to 6 years.
Is cocaine dangerous for the heart even if I am young?
Yes. NIDA says cocaine is linked with heart attacks, strokes and rhythm problems, and mixing it with alcohol may increase the harm to the heart.
Do I need a heart checkup in recovery?
It is a good idea, especially after heavy or long-term use. High blood pressure usually has no symptoms, so getting it measured is the only way to know.
References
- National Institute on Alcohol Abuse and Alcoholism (NIAAA). Alcohol’s Effects on the Body. Accessed October 2026. niaaa.nih.gov
- NIAAA. Medical Complications: Common Alcohol-Related Concerns. Core Resource on Alcohol. Accessed October 2026. niaaa.nih.gov
- Roerecke M, et al. The effect of a reduction in alcohol consumption on blood pressure: a systematic review and meta-analysis. The Lancet Public Health. 2017. PubMed. Accessed October 2026. pubmed.ncbi.nlm.nih.gov
- Voskoboinik A, et al. Alcohol Abstinence in Drinkers with Atrial Fibrillation. New England Journal of Medicine. 2020. PubMed. Accessed October 2026. pubmed.ncbi.nlm.nih.gov
- Guzzo-Merello G, et al. Natural history and prognostic factors in alcoholic cardiomyopathy. JACC: Heart Failure. 2015. PubMed. Accessed October 2026. pubmed.ncbi.nlm.nih.gov
- National Institute on Drug Abuse (NIDA). Cocaine. Accessed October 2026. nida.nih.gov
- NIDA. Methamphetamine. Accessed October 2026. nida.nih.gov
- NIDA. Opioids. Accessed October 2026. nida.nih.gov
- Fleischauer AT, et al. Hospitalizations for Endocarditis and Associated Health Care Costs Among Persons with Diagnosed Drug Dependence, North Carolina, 2010 to 2015. Morbidity and Mortality Weekly Report. 2017. PubMed. Accessed October 2026. pubmed.ncbi.nlm.nih.gov
- Paknahad MH, et al. QTc prolongation and torsades de pointes (TdP) in individuals undergoing methadone maintenance treatment (MMT): A systematic review and meta-analysis. Medicine. 2025. PubMed. Accessed October 2026. pubmed.ncbi.nlm.nih.gov
- Centers for Disease Control and Prevention (CDC). Benefits of Quitting. Accessed October 2026. cdc.gov
- U.S. Department of Health and Human Services. Smoking Cessation: A Report of the Surgeon General, Key Findings. 2020. Accessed October 2026. hhs.gov
- CDC. About High Blood Pressure. Accessed October 2026. cdc.gov
- National Heart, Lung, and Blood Institute (NHLBI). Heart-Healthy Living: Physical Activity. Accessed October 2026. nhlbi.nih.gov
- NHLBI. Heart-Healthy Living: Healthy Foods. Accessed October 2026. nhlbi.nih.gov
- NHLBI. Sleep Deprivation and Deficiency: How Sleep Affects Your Health. Accessed October 2026. nhlbi.nih.gov
- SAMHSA. National Helpline. Accessed October 2026. samhsa.gov
Related Reading
- Addiction Treatment
- Alcohol Rehab
- Alcohol and the Liver
- Fitness and Body Image in Recovery
- Building a Healthy Routine in Recovery
Resources
- 988 Lifeline. Call or text 988, or chat at 988lifeline.org. Free, confidential support 24/7.
- SAMHSA National Helpline. Call 1-800-662-HELP (4357) or visit the SAMHSA National Helpline page for free, confidential referrals to local treatment.
- 911. For any medical emergency, including chest pain, stroke symptoms or a suspected overdose, call 911 immediately.
This article is general education and is not medical advice.
If you or someone you love is ready to talk, call Discovery Point Retreat at (855) 245-7133 to speak with our admissions team.
