Nutritional habits can lower risks of Heart Diseases

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The following are examples of heart diseases:

Rheumatic heart disease
Rheumatic heart disease is caused by one or more attacks of rheumatic fever, which then do damage to the heart, particularly the heart valves.

Rheumatic fever usually occurs in childhood, and may follow a streptococcal infection. In some cases, the infection affects the heart and may result in scarring the valves, weakening the heart muscle, or damaging the sac enclosing the heart. The valves are sometimes scarred so they do not open and close normally.

Hypertensive heart disease
High blood pressure of unknown origin (primary hypertension) or caused by (secondary hypertension) certain specific diseases or infections, such as tumor in the adrenal glands, damage to or disease of the kidneys or their blood vessels. High blood pressure may overburden the heart and blood vessels and cause disease. 

Ischemic heart disease
Heart ailments caused by narrowing of the coronary arteries and therefore a decreased blood supply to the heart.

Cerebrovascular disease
Disease pertaining to the blood vessels in the brain. A cerebrovascular accident or stroke is the result of an impeded blood supply to some part of the brain.

Inflammatory heart disease
Inflammation of the heart muscle (myocarditis), the membrane sac (pericarditis) which surrounds the heart, the inner lining of the heart (endocarditis) or the myocardium (heart muscle). Inflammation may be caused by known toxic or infectious agents or by an unknown origin. (culled from world heart federation).

The following Nutritional habit could help you:

Eat vegetables as they provide necessary minerals and vitamins

Eat fruits at least twice daily as they are rich source of  fibres. Also almonds and walnuts are recommended.

Eating little garlic also helps to maintain blood pressure

Eating whole grains like rice and millet could also be of help as they are rich source of carbohydrates