NEET BIOLOGY

Detailed explanation-1: -Smoking causes cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD), which includes emphysema and chronic bronchitis. Smoking also increases risk for tuberculosis, certain eye diseases, and problems of the immune system, including rheumatoid arthritis.

Detailed explanation-2: -Health psychology looks at the complex array of biological, social and psychological factors that influence our health and illness-related behaviour. Smoking is a biological addiction, with nicotine as addictive as cocaine and heroin.

Detailed explanation-3: -Nicotine acts on these receptors to facilitate neurotransmitter release (dopamine and others), producing pleasure and mood modulation. Repeated exposure to nicotine develops neuroadaptation of the receptors, resulting in tolerance to many of the effects of nicotine.

Detailed explanation-4: -Symptoms may include cough, chest pain, shortness of breath, and recurring lung infections. Other types of cancer. Smoking increases the risk of cancer of the nose, sinuses, voice box, and throat. It also raises the risk of many other cancers.