For years, taking a daily low-dose aspirin was a common habit for millions of people trying to avoid a first heart attack or stroke. But the advice has changed - and not just a little. Today, aspirin for primary prevention is no longer a one-size-fits-all solution. In fact, for many adults, especially those over 60, it may do more harm than good.
Why the Rules Changed
Back in the 1990s, studies like the Physicians’ Health Study showed that aspirin could lower the risk of a first heart attack. That led to widespread recommendations: if you were over 50, especially with high blood pressure or high cholesterol, take a baby aspirin every day. It seemed simple. Cheap. Safe. But over time, researchers noticed something troubling. While aspirin did reduce heart attacks slightly, it also increased serious bleeding - in the stomach, intestines, and even the brain. The bigger the age, the worse the risk. A 70-year-old doesn’t just have a higher chance of a heart attack - they also have a much higher chance of bleeding badly from aspirin. And when the numbers are weighed, the harm often outweighs the benefit. In 2022, the U.S. Preventive Services Task Force (USPSTF) flipped its stance completely. They now say: do not start daily aspirin if you’re 60 or older. For people between 40 and 59, it’s not a clear yes or no. It depends on your personal risk - and your bleeding risk. If you’re in that middle group, talk to your doctor. Don’t just keep taking it because you always have.Who Definitely Should Skip Aspirin
There are clear groups of people who should avoid daily aspirin entirely - even if they’re under 60.- Anyone with a history of stomach ulcers - About 4% of U.S. adults have had one. Aspirin irritates the stomach lining. For these people, even low doses can trigger bleeding.
- People taking blood thinners - If you’re on warfarin, apixaban, rivaroxaban, or similar drugs, adding aspirin doubles your bleeding risk. No exceptions.
- Those on regular NSAIDs - Ibuprofen, naproxen, even occasional use of Advil or Aleve, increases the chance of gastrointestinal bleeding when mixed with aspirin. This affects nearly 1 in 5 adults over 65.
- People with uncontrolled high blood pressure - High BP already strains blood vessels. Aspirin can make brain bleeds more likely.
- Anyone with a bleeding disorder - Conditions like hemophilia or von Willebrand disease make aspirin dangerous.
The Gray Zone: Ages 40-59
This is where things get messy. For people in their 40s and 50s, the decision isn’t automatic. It’s personal. The USPSTF says consider aspirin only if you have at least a 10% chance of having a heart attack or stroke in the next 10 years. That number comes from a tool called the Pooled Cohort Equations. It factors in age, sex, race, cholesterol, blood pressure, diabetes, and smoking status. But here’s the catch: even if your 10-year risk hits 10%, you still need to check your bleeding risk. Use the HAS-BLED score - it looks at things like kidney disease, liver disease, alcohol use, and past bleeding episodes. If you score 3 or higher, skip aspirin. The risk of bleeding is too high. One study found that for every 1,000 people aged 40-59 with high CVD risk who took aspirin daily for 10 years, about 20 heart attacks were prevented. But 17 major bleeds happened. That’s almost a wash. And for some, the bleed was life-changing - or fatal.
What About Diabetes?
Diabetes is a major risk factor for heart disease. Many assume people with diabetes should automatically take aspirin. Not anymore. The 2025 AHA/ACC guidelines say: only consider aspirin for adults with diabetes aged 40-70 if their 10-year CVD risk is 15% or higher - and only if they have no bleeding risk. That’s a much narrower group than before. A 2024 study in Diabetes Care found aspirin helped only those with high levels of Lp(a) - a genetic cholesterol marker. For others with diabetes, there was no benefit. So if you have diabetes, don’t assume aspirin is right for you. Get tested. Talk to your doctor.Why People Keep Taking It Anyway
Despite the guidelines, many people still take aspirin daily. A 2023 Mayo Clinic survey found 41% of adults over 60 continued taking it - even after their doctors told them to stop. Why? Fear. Many say, “I’ve been taking it for 20 years. What if I have a heart attack tomorrow?” But the truth is, if you’re over 60 and never had a heart attack or stroke, aspirin isn’t giving you much protection anymore. The benefit is tiny. The risk? Real. Another reason? Confusion. Patients often mix up primary and secondary prevention. Primary prevention means preventing a first event. Secondary means preventing a second event after you’ve already had one. If you’ve had a heart attack, stent, or stroke - then aspirin is still strongly recommended. But if you haven’t? The rules are totally different. A 2023 JAMA Internal Medicine study found 57% of patients got conflicting advice from their doctors. One doctor said stop. Another said keep going. That’s not a failure of the patient - it’s a failure of the system. Guidelines changed fast. Not every doctor kept up.
What to Do Instead
If you’re not taking aspirin for primary prevention, what should you do?- Focus on lifestyle - Quit smoking. Move more. Eat more vegetables and less processed food. Control your blood pressure. These do more than aspirin ever could.
- Check your numbers - Get your LDL cholesterol, blood sugar, and blood pressure checked annually. Know your numbers.
- Ask about CAC scoring - Coronary Artery Calcium (CAC) scans show actual plaque buildup in your heart arteries. If your score is over 100, your risk is high - even if your cholesterol looks okay. Some cardiologists still recommend aspirin for these patients, but it’s controversial.
- Use free tools - The American Heart Association’s “Know Your Risk” calculator is free and easy to use. So is the USPSTF’s decision aid.
The Bottom Line
Aspirin isn’t magic. It’s a drug with side effects. For most people without heart disease, it’s no longer a preventive tool - it’s a risk. If you’re over 60 - don’t start. If you’re already taking it, talk to your doctor about stopping. Don’t quit cold turkey - taper slowly under supervision. If you’re 40-59 and healthy - don’t assume you need it. Calculate your risk. Check your bleeding risk. Make a shared decision with your doctor. And if you’ve had a heart attack, stroke, or stent - keep taking it. That’s not primary prevention. That’s life-saving. The days of automatic aspirin are over. The new standard is: no aspirin unless the math clearly says yes.Should I stop taking aspirin if I’m over 60?
Yes, if you’ve never had a heart attack, stroke, or stent. The U.S. Preventive Services Task Force recommends against starting aspirin after age 60 because the risk of bleeding - especially in the stomach or brain - outweighs the small benefit in preventing a first heart event. If you’re already taking it, don’t stop suddenly. Talk to your doctor about a safe plan to taper off.
Is aspirin still okay if I have diabetes?
Maybe - but only if you’re between 40 and 70, have a 10-year cardiovascular risk of 15% or higher, and have no bleeding risks. A 2025 guideline update says aspirin isn’t routinely recommended for all people with diabetes. In fact, it only helps those with specific risk markers like high Lp(a) or a coronary calcium score over 100. Most people with diabetes won’t benefit.
Can I take aspirin if I also take ibuprofen?
No. Taking aspirin with ibuprofen, naproxen, or other NSAIDs greatly increases your risk of stomach bleeding. Even occasional use of Advil or Aleve can interfere. If you need pain relief while on aspirin, talk to your doctor about acetaminophen (Tylenol) instead - it doesn’t affect bleeding risk the same way.
What’s the difference between primary and secondary prevention?
Primary prevention means trying to prevent a first heart attack or stroke in someone who’s never had one. Secondary prevention is for people who already had one - and are taking aspirin to prevent another. Aspirin is still strongly recommended for secondary prevention. But for primary prevention, the risks now often outweigh the benefits - especially after age 60.
How do I know my 10-year heart disease risk?
Your doctor can calculate it using the Pooled Cohort Equations, which use your age, sex, race, cholesterol, blood pressure, diabetes status, and smoking history. You can also use the American Heart Association’s free online calculator. A score of 10% or higher means you might benefit from aspirin - but only if your bleeding risk is low.
Is there a test to see if aspirin will work for me?
Not yet in routine practice - but research is moving in that direction. Some labs now offer genetic tests to see how your body responds to aspirin. One study found people with certain gene variants don’t get the same heart protection from aspirin. Experts predict these tests will become standard in the next five years. For now, focus on your overall risk profile instead.
What if my doctor still recommends aspirin?
Ask why. Some doctors, especially cardiologists, still recommend it for patients with high coronary calcium scores or strong family histories. But they’re going against the latest guidelines. Get a second opinion. Ask for your CAC score, Lp(a) level, and bleeding risk score. If your doctor can’t provide those numbers, you might be taking aspirin without a clear reason.
Can I take aspirin if I’m on blood pressure meds?
It depends. If your blood pressure is well-controlled (below 140/90), aspirin may still be an option - if you’re under 60 and have high heart disease risk. But if your blood pressure is high or uncontrolled, aspirin increases your risk of brain bleeding. Talk to your doctor before combining them.
Aspirin isn’t going away. But its role has changed. It’s no longer a daily shield for healthy people. It’s a targeted tool - and only for very specific cases. Don’t rely on habit. Rely on data.
