Recent studies have shown that some people have a reduced ability to process alcohol and nicotine, due to a small genetic variation on Chromosome 19. People with this variation are more likely to develop addictions, and have greater difficulty in breaking those addictions.

Additionally, smokers who have this gene mutation are up to 20 times likelier to contract lung cancer than other smokers.

This test can tell you if you are at an increased risk of these diseases, and can help you make healthier life choices. Knowing that you have this gene can help you know when to say 'no' to a drink, and can help you get motivated to quit smoking.