Spinach:
Spinach and many other green leafy vegetables such as lettuce contain folate, also known as vitamin B9. Although folate deficiency is well known for its effects in causing spinal malformations in newborns, recent studies reveal that folate may have a role in heart disease by reducing circulating levels of homocysteine in the blood. High homocysteine levels increase your risk of heart attacks as well as stroke; therefore, increasing your dietary intake of folate-containing foods may help reduce the risk of CHD (Chronic Heart Disease).
In general, a diet rich in vegetables as well as fruit can significantly reduce hypertension, a major risk factor for CHD.

Salmon:
Salmon and other fish are the foods with probably the most scientific evidence for heart protection. The active ingredient in salmon is the omega-3 fatty acids. Omega-3 fatty acids may reduce risk of CHD by several mechanisms including reducing blood pressure, blocking platelet function and clot formation, and preventing plaque formation in artery walls. One study in the Netherlands following men over a 20 year period showed an obvious inverse relationship between fish consumption and CHD.
Omega-3 fatty acids also help to regulate the electrical activity of the heart, thereby reducing the likelihood of sudden cardiac death.

Almonds:
Almonds and other nuts are a rich source of mono and polyunsaturated fats that can not only reduce total cholesterol but also raise your high-density lipoprotein (HDL) cholesterol, the “good” cholesterol. Almonds also contain phytosterols that are naturally occurring plant steroids that block the intestinal tract from absorbing all types of fats.

Oats:
Oats belong to a larger category of foods referred to as whole grains. Whole grains contain the entire kernel as opposed to refined grains that have been processed to remove the bran and the germ. While this process allows certain grains to last longer on store shelves, it also removes much of the good stuff like B vitamins, vitamin E, fiber, and antioxidants. Oats, in particular, as found in your morning oatmeal, contain a soluble fiber known as beta-glucan that decreases the total cholesterol in your blood as well as your low-density lipoprotein (LDL) cholesterol. This is important because it is the LDL or “bad” cholesterol that’s responsible for heart attacks.In addition, whole grains have a low glycemic index, which is a measure of how high a food raises your blood sugar level. Foods with low glycemic index have a clear health advantage, particularly in helping to prevent diabetes (a major risk factor for coronary heart disease).

Red wine:
In moderation (4 to 8 ounces/day), red wine is cardioprotective. This effect comes from antioxidants found in red wine, particularly resveratrol. This compound found in grape extracts has several beneficial effects on the heart, including reducing LDL as well as total blood cholesterol.Other polyphenols found in red wine, have been shown to reduce blood clots by inhibiting a component found in blood known as platelets. Similar to the action of aspirin, which is one of the mainstay therapies in heart attack prevention, red wine helps to prevent platelets from clumping together, which is a key event in coronary artery blockage.