Blood clots are an important function that stops us from bleeding too much if we get injured, but they can sometimes be deadly when they form when they are not required.
Certain people may be more likely to develop a blood clot, such as smokers, those who are overweight, those who live a sedentary lifestyle or those who use the contraceptive pill, patch or vaginal ring.
If a blood clot develops, it can cause a stroke, heart attack or even be fatal.
