Smoking is known to cause cancer and heart disease. There are now strong links between smoking and diabetes. There are many other conditions and illnesses that smoking might cause or contribute to.
Don't you think it will feel great when you don't need to know about any of this anymore? When you no longer need to weigh up the odds, and wonder about whether lung cancer or emphysema might get you first? This will be the greatest health benefit of all – freedom from anxiety about what smoking is doing to your health. There is no guarantee that you won't get ill in the future, but it won't be as a result of smoking, and you will have done your health a huge favour.
For further ideas and advice and ways to stop smoking, visit the substantial resources section of this site - Stop Smoking Resources