Recent Blog Articles
Poison ivy: Scratchin’ like a hound?
Apps to accelerometers: Can technology improve mental health in older adults?
Opioid addiction and overdoses are increasingly harming Black communities
New Harvard tool helps fact-check cancer claims
Hand pain from arthritis? This may help
Polio: What parents need to know now
Ketamine for treatment-resistant depression: When and where is it safe?
Have lupus? What to know about birth control
Screening at home for memory loss: Should you try it?
Travel tummy troubles: Here’s how to prevent or soothe them
Omega-3 fats and your heart
There's yet more evidence about the health benefits of these polyunsaturated fats — and they don't necessarily have to come from fish.
Since the late 1970s, hundreds of studies have supported a link between omega-3 fatty acids in the diet and a lower rate of heart attacks and related problems. The best-known omega-3s — found mainly in fatty fish such as salmon, herring, and mackerel — are eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).
But a less-familiar form of these unique fats, alpha-linolenic acid (ALA), occurs only in plants and is actually fairly prevalent in some American diets (see "Omega-3 fats: The best plant-based sources"). Now, a new study suggests that higher blood levels of both fish- and plant-based omega-3s help lower the odds of a poor prognosis in the years following a heart attack.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.Sign Me Up
Already a member? Login ».
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
Free Healthbeat Signup
Get the latest in health news delivered to your inbox!