Health

Can Cannabis Cause Stroke in Young Adults? New Study Says Risk Is Much Higher - Marijuana Users May Face Higher Heart Attack Risk

YEET MAGAZINE

13 Apr 2026 • 6 min read

By YEET Magazine Staff, YEET Magazine
Published April 13, 2026

If you’re under 50 and use cannabis, this matters.
A major new study found that people who use marijuana could have a much higher risk of stroke and heart attack compared to non-users.
For years, weed has been seen as “safe.” But new data is starting to challenge that idea.
Here’s what the research actually found — and what it could mean for your health.

These are the lungs of a 10-year marijuana user. They are not supposed to look like this. People think it’s harmless, but this is what long-term use actually does to your body. Smoke at your own risk.

What the study found

A large study of over 4.6 million adults found strong links between cannabis use and heart problems.

Key findings:

Up to 6× higher risk of heart attack
Around 4× higher risk of stroke
3× higher risk of major heart issues
2× higher risk of heart failure

This surprised researchers because cannabis is often seen as less harmful than alcohol or cigarettes.

Why this can happen

Why cannabis may increase stroke risk

Researchers say cannabis can affect the body in several ways:

Raises heart rate and blood pressure
Reduces oxygen levels in the blood
Increases inflammation in blood vessels
Affects how blood clots

These effects can increase the risk of stroke or heart attack — especially in people with existing risk factors.

Who is at most risk

Who should be careful

The risk may be higher if you:

Are under 50
Use cannabis regularly
Already have high blood pressure or cholesterol
Smoke tobacco

Even occasional users may not be risk-free.

“ Well after 15 years of using marijuana almost daily, I have to stop. I have something called Cannabinoid Hyperemesis Syndrome which makes me feel deathly ill. As of today, I am 7 days sober. Here's to new beginnings I guess.”

What doctors are saying

Some experts say the biggest problem is perception.

Many people assume cannabis is harmless because it’s legal in many places.
But doctors warn that legal doesn’t always mean safe, especially for heart health.

If you experience:

chest pain
dizziness
shortness of breath

you should seek medical advice.

The bottom line

Cannabis use may come with more risks than people think — especially for young adults.

This doesn’t mean everyone will have problems, but the data shows one thing clearly:

👉 The risk of stroke and heart issues may be higher than expected.

FAQ

Can cannabis cause stroke in young adults?

Some studies show a higher risk of stroke in young cannabis users, especially with regular use.

Is weed bad for your heart?

Cannabis may increase heart rate, blood pressure, and inflammation, which can affect heart health.

Is occasional cannabis use safe?

There is no clear “safe” level. Even occasional use may carry some risk depending on your health.

A new study shows that adults under 50 who use marijuana could face a much higher risk of heart attack and stroke. Learn what experts are saying and how it could affect your health.

marijuana heart attack risk, weed health effects, cannabis and heart disease, smoking weed side effects, heart attack under 50, marijuana study 2025, cannabis and stroke

If you think weed is harmless, think again. A major new study published in the Journal of the American College of Cardiology (JACC) suggests that adults under 50 who use marijuana are six times more likely to have a heart attackthan people who don’t use it.

The research looked at over 4.6 million adults and found some pretty worrying links between cannabis and heart problems.

“This isn’t about demonizing marijuana — it’s about understanding the risks,” researchers said in the study. “Heart and blood vessel health can be affected by regular cannabis use.”

📖 Read the full study here

💔 What the Study Found

Here’s the simple version:
People who use weed — especially young adults — could face serious heart problems down the line.

According to the study:

Marijuana users under 50 are 6x more likely to have a heart attack.
They’re 4x more likely to have a stroke.
3x more likely to face major heart or blood vessel problems.
2x more likely to develop heart failure.

These numbers shocked a lot of experts because weed is often seen as a “safe” drug compared to cigarettes or alcohol. But the truth is, it may put more stress on your heart than you think.

🧠 What Could Be Happening Inside Your Body

Researchers believe marijuana might affect the heart by:

Increasing heart rate and blood pressure
Lowering oxygen levels in the blood
Causing inflammation in blood vessels
Affecting the way blood clots

When combined, these effects can raise the risk of a heart attack — especially if you already have high blood pressure, high cholesterol, or smoke cigarettes.

🗣️ What Experts Are Saying

Doctors are urging people — especially under 50 — to think twice before using marijuana regularly.

“Just because it’s legal doesn’t mean it’s safe,” says Dr. Andrew Freeman, a cardiologist not involved in the study. “People should treat cannabis like any other substance that can affect the heart.”

If you use weed, experts suggest talking to your doctor about your heart health, especially if you notice chest pain, dizziness, or shortness of breath.

🎧 Want to Learn More?

The topic is also discussed on the “Change Your Brain Every Day” podcast — available on Apple Podcasts, Spotify, and YouTube. The episode breaks down how weed may impact both your brain and your heart.

💬 Join the conversation

Cannabis might be legal in more places than ever, but that doesn’t mean it’s risk-free.
This new research is a wake-up call — especially for people who see marijuana as a “natural” or “safe” way to relax.

Heart health matters, and now it’s clear: weed could play a bigger role in heart attacks than anyone thought.

Sources: