Definition of inference for English Language Learners. : 1  the act or process of reaching a conclusion about something from known facts or evidence. : 2  a conclusion or opinion that is formed because of known facts or evidence.
Another risk factor for clogged arteries is having a high blood pressure. When you have high blood pressure, there is a greater chance in speeding up the process of arterial plaque buildup. This also expedites the hardening of the clogged arteries.
With time, the plaque buildup would narrow the artery so much that the artery would either close off or become clogged by a blood clot (much like a clogged drain). The lack of oxygen-rich blood to the heart would then lead to a heart attack. But these types of blockages cause only about 3 out of 10 heart attacks.