IndexCause 1: Effects on physical healthCause 2: Effects on psychological and mental healthCause 3: Social and economic consequencesConclusionSmoking is a habit that has existed for centuries, but did you know which is responsible for the deaths of approximately six million people worldwide every year? Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Smoking dates back to ancient times, when people burned herbs and inhaled the smoke for medicinal purposes. However, with the discovery of tobacco, smoking became a widespread habit and tobacco companies have been marketing their products ever since. Despite known health risks, smoking remains widespread in many parts of the world. Cause 1: Physical Health Effects Cigarettes contain more than 7,000 chemicals, many of which are toxic and carcinogenic. Effect 1: Smoking increases the risk of developing respiratory diseases such as lung diseases. cancer, emphysema and chronic bronchitis. Carcinogens in tobacco smoke damage the delicate lining of the lungs and airways, making them more susceptible to infection and disease. Effect 2: Smoking weakens the immune system, making smokers more prone to infections and diseases. Toxic chemicals in tobacco smoke can interfere with the body's ability to fight infections, making smokers more susceptible to illnesses such as pneumonia and flu. Effect 3: Smoking damages vital organs such as the heart and lungs, increasing the risk of heart disease and stroke. Toxic chemicals in cigarette smoke can cause inflammation of the blood vessels, reducing blood flow to the heart and increasing the risk of heart attack and stroke. Cause 2: effects on psychological and mental health Nicotine, the addictive substance contained in tobacco, has profound effects on the brain and mental health. Effect 1: Smoking increases the risk of developing anxiety disorders, depression and other mental health problems. Nicotine can alter brain chemistry, leading to changes in mood and behavior and making it harder for smokers to cope with stress and anxiety. Effect 2: Smoking damages cognitive functions, memory and concentration. The nicotine in cigarettes can interfere with brain function, making it harder for smokers to concentrate, remember things and make decisions. Effect 3: Smoking can contribute to substance abuse and dependence on other drugs or alcohol. Nicotine addiction is a powerful force that can lead to other addictive behaviors, making it more difficult for smokers to quit smoking and overcome other addictions. Cause 3: Social and economic consequences Smoking has far-reaching impacts on society and the economy. Effect 1: Second-hand smoke exposure harms non-smokers, especially children and pregnant women. Secondhand smoke contains many of the same toxic chemicals as cigarette smoke, and exposure to secondhand smoke can lead to health problems such as asthma, cancer, and heart disease. Effect 2: Smoking-related diseases and healthcare costs place a significant burden on healthcare systems. . Smoking-related diseases are expensive to treat, and the economic burden of smoking falls disproportionately on individuals and low-income countries. Effect 3: Smoking reduces productivity and quality of life, leading to economic losses for individuals and nations. Smokers are more likely to be absent from work due to illness, and smoking-related illnesses can reduce life expectancy and quality of life. Conclusion Restatement of the thesis:.