| | Conditions Treatments | Heart Attack What is the heart attack caused by? Heart attacks are caused by a reduction in blood flow to the heart, typically when plaques buildup or a blood clot completely blocks a vital artery in the heart. Heart Attack - Related Articles How to Get Rid of Blisters Faster Codes of Practice in Health & Safety The Best Hair Growth Treatment How do the lungs work with stomach? Blade Trinity Diet Femhrt Side Effects Herbs to Cleanse the Body of Toxins