Please take care of your heart & health Cardiologist doctor near to me Clogged Arteries A buildup of sticky plaque means (fat and cholesterol) can narrow your heart's arteries and making it harder for blood to pass through. Many people don't even know there's a problem until an artery is clogged by a blood clot and they have a heart attack. But people dont no what inside is going on. But there may be warning signs of coronary artery disease, like frequent chest pain called angina.