Omega-3 fatty acids: Does your diet deliver?
Most Americans don't get the recommended amount of these potentially heart-protecting fats.
Recently, a Harvard Heart Letter subscriber emailed us a question about omega-3 fatty acids, the unique fats abundant in many types of fish that may be linked to a lower risk of cardiovascular disease. Is there a difference, he wondered, between farm-raised and wild-caught salmon in terms of omega-3 fatty acid content?
It's a reasonable question, especially considering that wild salmon is often far more expensive than the farm-raised variety. But how much omega-3 fatty acid do we really need in our diets? And are fish the only source? Here's a brief summary of what you should know about omega-3s.
Omega-3s and your heart
There are three main forms of these unsaturated fats, which play an essential role in human health (see "Three key omega-3s"). The so-called marine fatty acids, EPA and DHA, have several potential cardiovascular benefits. They might help