When it comes to a healthy heart, dieting is one of the best way to keep it healthy.

And there are a few super foods that do that especially well.

Beets are in season now, and eating these purple roots unleashes nitrates into your blood that expand your blood vessels and help with blood flow.

Nuts contain heart-healthy fats, and eating a handful of these five times a week reduce your chances of dying from heart disease by 29 percent, according to a study in the New England Journal of Medicine.

And fatty fish like salmon and sardines can improve cardiac capacity during exercise because of their omega-3 fatty acids. You should aim to get those on your dinner plate twice a week. But remember, portion size still matter 4 ounces is all you'll need.

And when it comes to looking for signs of a heart that isn't healthy, here are a few you might not have heard of

Earlobe creases: If you've got a lobe with a horizontal crease, in it studies have found that you are 30 percent more likely to have hypertension add to that male pattern baldness or yellow fatty deposits around the eyes -- and your heart attack risk increases even more.

And here's something to keep in mind: Many of the factors that raise your risk of heart disease like high cholesterol, smoking, diabetes and not exercising also affect your brain.

Because these factors can lead to restricted blood flow, inflammation, blood clots and even plaque formation that can lead to Alzheimer's disease.