Why pulse is considered as vital sign

The pulse is considered a vital sign as it indicates the number of times the heart beats. It also measures the heart beat and heart rhythm. So it is very important for our well being. So it is one of the vital signs as it shows us the 'baseline' of our health compared to our condition when we were not healthy.

Explanation:

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.