From an article by Dr. John W. Patton Pee Dee Cardiology
“Smoking is a dangerous, addictive habit that not only affects you, but the people around you,” says McLeod Cardiologist John “Will” Patton, MD. “It is also the number one cause of preventable disease and death worldwide, according to the American Lung Association.” Research leaves little doubt that quitting smoking will improve your health. As soon as you quit, your body begins to repair the damage caused by smoking. Your risk of heart and lung disease, cancer, stroke, heart attack, and vision problems will also decrease. It doesn't matter how long you have been smoking. You can always benefit from quitting. It’s also well known thatnicotine – a drug found in tobacco – is highly addictive. Withdrawal symptoms include: anxiety, depression, irritability, trouble sleeping and increased appetite. Users often return to smoking because of the withdrawal symptoms. You can increase your chances of success if you prepare to quit.