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A shocking video has revealed the full extent of the damage caused to the heart by smoking.
Released by the World Health Organization (WHO), it aims to raise awareness of the effect of cigarettes on the heart and encourage smokers to quit.
The 30-second clip starts with a heart beating slowly, as it asks viewers if they were aware that tobacco is a major cause of heart disease.
But as the video proceeds, it beats quicker and more smoke can be seen puffing from its valves - designed to mimic being overworked.
The footage, released yesterday for World No Tobacco Day, ends with the message 'protect your heart and choose health - not tobacco'.
Figures estimate that tobacco is the primary cause of 17 per cent of all deaths from heart disease, the world's leading killer.