Smoking adversely harms and affects every organ of the smoker's body. It increases blood pressure, heart rate, and even raises the risk of coronary heart disease, heart attack, stroke, lung cancer.
Many smokers are drawn towards smoking because of the presence of nicotine as it gives them an immediate but temporary sense of relaxation.
Nicotine is highly addictive, influencing the levels of dopamine and noradrenaline that affects mood and concentration. And its withdrawal leads to increased cravings, anxiety and raises stress in the long run.
When you inhale nicotine, it produces feelings of pleasure and reduces stress and anxiety. When the brain becomes used to the nicotine, smokers become dependent on the nicotine rush. Then increased smoking is needed for the same effect.
The harm caused by smoking is permanent. However, some programs help smokers to stop their smoking habit and lead a healthy lifestyle.