Omega-3s can fight breast cancer... but only if you get the right kind

Time for a label-check, ladies, and if you're taking an omega-3 supplement -- as I hope you are -- I want you to pay extra close attention to the fine print.

Don't just look for how much is in there.

Look for where it comes from.

There's a BIG difference between the omega-3s you get from plants (ALA) and the kinds that come from fish (EPA and DHA).

And if you're not getting the second one, you could completely miss out on one of the most important benefits of an omega-3 supplement -- and that's its ability to fight off the most dangerous forms of breast cancer.

It's a benefit that could save your life, but new research shows how you'll ONLY get it if your omega-3s come from fatty fish, like salmon.

In one major clinical trial published in 2010, women who took omega-3 supplements had a 32 percent lower risk of developing breast cancer than those who didn't.

In some cases, that risk was cut by as much as 50 percent!

Now, the new study takes it a step further as researchers looked to see HOW and WHY certain omega-3s can slip inside a tumor and wipe it out.

For this one, they used mice. While I'm generally not a fan of animal studies, these help to confirm the effects we've seen in multiple human trials and show how it works against a tumor and how to maximize your use of fish oil to target this deadly disease.

The researchers found that when ALA -- the plant form of omega-3 fatty acid -- was given to mice with one of the deadliest forms of breast cancer, it hardly made a difference at all.

It only started to work at very high doses -- levels you wouldn't get from diet and, in most cases, even a supplement.

That wasn't the case for EPA and DHA.

These cancer-fighting fatty acids went in and went right to work, shrinking these aggressive tumors by as much as 70 percent and reducing the number of tumors by nearly a third.

These two fatty acids together were EIGHT TIMES more powerful than the ALA!

What's more, it didn't take ridiculous levels to get the benefit.

The equivalent amount in humans would be an omega-3-rich fish such as salmon, tuna, or trout for dinner just three times a week.

If you don't like fish... or you just don't eat it that often... you can get what you need from an omega-3 supplement. Just make sure that it's from fish and not from plants.