First of all, what IS heart disease? Funnily enough, it is any disease that effects the heart. This includes heart attacks.
Diets high in saturated fats can lead to heart disease. This is because it can cause a build up of cholesterol in the artery walls (called a plaque) and this narrows them. If this happens, the heart has to pump harder to get the blood through the narrowed artery. If a blood clot (thrombosis) was then to pass through that artery, it would get stuck and cause a heart attack.
Diets high in salt can also cause heart disease. This is because consuming too much salt causes high blood pressure, which increases the likelihood of artery damage and plaques.
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