1. High-fat diet 

 Consuming high levels of fat causes an increase in blood lipid levels, leading to thickening and deposition of fat in the blood vessels. This slows down blood flow and promotes the development of various diseases. 

2. Prolonged sitting 

This can result in thickening of the blood, affecting blood flow and damaging the health and function of the vascular system.

3. Smoking and excessive alcohol consumption Cigarettes and alcohol contain harmful substances that directly damage blood vessel walls and disrupt normal blood flow.