For overall well-being...

how smoking affects our overall health

Effect on skin: e.g., premature ageing
Effect on cardio-vascular function: e.g., unstable angina, myocardial infarction and atherosclerotic vascular disease etc. 
Effect on lungs: e.g., cough and cold. COPD (Chronic Obstructive Pulmonary) Disease and not to mention lung cancers...almost 90 percent of all lung cancer cases globally are associated with smoking, it says.
Effect on teeth and gums: e.g., yellow teeth, persistent bad breath and gum diseases, an increased chance of losing teeth as compared to non-smokers, accumulation of bacteria within gum area leading to their inflammation.
Effect on your stomach: e.g., peptic ulcers with 60 percent more chances of developing stomach cancer as compared to non-smokers.
Effect on eyes: e.g., cataracts and age-related macular degeneration have been shown to have strong links with smoking.
Effect on fitness: smokers are more likely to suffer from shortness of breath, fast heart rate and poor circulation due to which a person becomes unable to withstand the demands of physical training.
Effect on fingers: Smoking alters the appearance of the skin around fingers making them look aged and wrinkled......read more