Smoking increases levels in the blood, thus increasing the possibility of unwanted clotting.

It could increase homocysteine levels—and when these levels are raised, it could make the inner linings of the arteries to be damage and it usually occurs because of unwanted clotting increasing in a person’s body of which could cause factor or contributors making the increase, such as like smoking—this increases, the unwanted blood clots in the body which makes these levels increase, producing unwanted defects.